{"id":104013,"date":"2021-11-07T00:00:00","date_gmt":"2021-11-07T00:00:00","guid":{"rendered":"https:\/\/docosan-blog.local\/blog\/uncategorized\/cach-tinh-ngay-tranh-thai-theo-chu-ky-kinh-nguyet\/"},"modified":"2023-05-14T00:00:00","modified_gmt":"2023-05-14T00:00:00","slug":"cach-tinh-ngay-tranh-thai-theo-chu-ky-kinh-nguyet","status":"publish","type":"post","link":"https:\/\/www.docosan.com\/blog\/phu-san\/cach-tinh-ngay-tranh-thai-theo-chu-ky-kinh-nguyet\/","title":{"rendered":"C\u00e1ch t\u00ednh ng\u00e0y tr\u00e1nh thai theo chu k\u1ef3 kinh nguy\u1ec7t"},"content":{"rendered":"\n<p class=\"has-gray-200-background-color has-background wp-block-paragraph\"><strong>C\u00e1ch t\u00ednh ng\u00e0y tr\u00e1nh thai theo chu k\u1ef3 kinh nguy\u1ec7t l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u1eb1m gi\u00fap cho c\u00e1c ch\u1ecb em c\u00f3 th\u1ec3 ph\u1ea7n n\u00e0o ch\u1ee7 \u0111\u1ed9ng h\u01a1n trong vi\u1ec7c ph\u00f2ng mang thai ngo\u00e0i k\u1ebf ho\u1ea1ch sau khi quan h\u1ec7 t\u00ecnh d\u1ee5c. H\u00e3y c\u00f9ng <a href=\"https:\/\/www.docosan.com\/\" target=\"_blank\" rel=\"noreferrer noopener\"><a href=\"https:\/\/www.docosan.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Doctor c\u00f3 s\u1eb5n<\/a><\/a> h\u1ecdc c\u00e1ch t\u00ednh chu k\u1ef3 kinh nguy\u1ec7t \u0111\u1ec3 tr\u00e1nh thai qua b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang ta c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng \u0111\u00fang v\u00e0o &#8220;th\u1ef1c h\u00e0nh&#8221; nh\u00e9! <\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"chu-k\u1ef3-kinh-nguy\u1ec7t-la-gi\">Chu k\u1ef3 kinh nguy\u1ec7t l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Chu k\u1ef3 kinh nguy\u1ec7t&nbsp;l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng sinh l\u00fd l\u1eb7p \u0111i l\u1eb7p l\u1ea1i \u1edf ph\u1ee5 n\u1eef t\u00ednh t\u1eeb th\u1eddi \u0111i\u1ec3m d\u1eady th\u00ec (kho\u1ea3ng 12 &#8211; 17 tu\u1ed5i, c\u0169ng c\u00f3 tr\u01b0\u1eddng h\u1ee3p s\u1edbm h\u01a1n) cho \u0111\u1ebfn khi m\u00e3n kinh 45 &#8211; 55 tu\u1ed5i , \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi s\u1ef1 ph\u1ed1i h\u1ee3p ho\u1ea1t \u0111\u1ed9ng m\u1ed9t c\u00e1ch nh\u1ecbp nh\u00e0ng, tr\u1eadt t\u1ef1 c\u1ee7a v\u00f9ng d\u01b0\u1edbi \u0111\u1ed3i, tuy\u1ebfn y\u00ean, bu\u1ed3ng tr\u1ee9ng khi\u1ebfn cho h\u00e0m l\u01b0\u1ee3ng hormone sinh d\u1ee5c c\u1ea7n thi\u1ebft cho s\u1ef1 sinh s\u1ea3n trong c\u01a1 th\u1ec3 thay \u0111\u1ed5i (estrogen ho\u1eb7c progesterone), c\u00f3 th\u1ec3 t\u1ee5t gi\u1ea3m \u0111\u1ed9t ng\u1ed9t (ti\u1ec1n \u0111\u1ec1 kh\u1edfi ph\u00e1t cho chu k\u1ef3 kinh nguy\u1ec7t), ho\u1eb7c t\u0103ng tr\u1edf l\u1ea1i v\u1ec1 m\u1ee9c b\u00ecnh th\u01b0\u1eddng \u1edf cu\u1ed1i chu k\u1ef3.   <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.docosan.com\/blog\/wp-content\/uploads\/2021\/11\/Cach-tinh-ngay-tranh-thai-theo-chu-ky-kinh-nguyet-3.jpg\" alt=\"C\u00e1ch t\u00ednh ng\u00e0y tr\u00e1nh thai theo chu k\u1ef3 kinh nguy\u1ec7t\" class=\"wp-image-34789\"\/><figcaption class=\"wp-element-caption\">Cach-tinh-ngay-tranh-thai-theo-chu-ky-kinh-nguyet<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t chu k\u1ef3 kinh nguy\u1ec7t chia l\u00e0m 2 chu k\u00ec nh\u1ecf: chu k\u1ef3 bu\u1ed3ng tr\u1ee9ng (nh\u1eb1m ch\u1ec9 nh\u1eefng thay \u0111\u1ed5i x\u1ea3y ra t\u1ea1i bu\u1ed3ng tr\u1ee9ng) v\u00e0 chu k\u1ef3 t\u1eed cung (nh\u1eb1m ch\u1ec9 nh\u1eefng thay \u0111\u1ed5i x\u1ea3y ra t\u1ea1i t\u1eed cung). <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e8n \u0111\u1ecf l\u00e0 t\u00ecnh tr\u1ea1ng ch\u1ea3y m\u00e1u t\u1eed cung mang t\u00ednh \u0111\u1ecbnh k\u1ef3 c\u1ee7a ng\u01b0\u1eddi ph\u1ee5 n\u1eef, \u0111\u00e2y l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a ti\u1ebfn tr\u00ecnh t\u1ef1 nhi\u00ean theo chu k\u1ef3 x\u1ea3y ra \u1edf ph\u1ee5 n\u1eef kh\u1ecfe m\u1ea1nh. Ch\u00ednh v\u00ec v\u1eady kinh nguy\u1ec7t di\u1ec5n ra l\u00e0 m\u1ed9t d\u1ea5u hi\u1ec7u quan tr\u1ecdng \u0111\u1ec3 nh\u1eadn bi\u1ebft ph\u1ee5 n\u1eef kh\u00f4ng c\u00f3 thai. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u00e0y ra m\u00e1u \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 ng\u00e0y \u0111\u1ea7u ti\u00ean c\u1ee7a k\u1ef3 kinh. Nguy\u00ean nh\u00e2n c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y l\u00e0 do hormone suy gi\u1ea3m l\u00e0m cho l\u1edbp n\u1ed9i m\u1ea1c t\u1eed cung b\u1ecb bong ra. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi ng\u00e0y ra m\u00e1u cu\u1ed1i c\u00f9ng k\u1ebft th\u00fac, h\u00e0m l\u01b0\u1ee3ng hormone Estrogen s\u1ebd t\u0103ng d\u1ea7n \u0111\u1ec3 l\u00e0m d\u00e0y l\u1edbp n\u1ed9i m\u1ea1c t\u1eed cung \u0111\u00e3 b\u1ecb bong v\u00e0 k\u00edch th\u00edch cho nang tr\u1ee9ng ph\u00e1t tri\u1ec3n. L\u00fac n\u00e0y s\u1ebd c\u00f3 m\u1ed9t v\u00e0i nang tr\u1ee9ng ph\u00e1t tri\u1ec3n v\u01b0\u1ee3t tr\u1ed9i, ch\u00fang ch\u1edd cho hormone LH t\u0103ng l\u00ean \u0111\u1ed9t bi\u1ebfn \u0111\u1ec3 ph\u00f3ng th\u00edch tr\u1ee9ng v\u00e0 di\u1ec5n ra s\u1ef1&nbsp;r\u1ee5ng tr\u1ee9ng. Trong&nbsp;chu k\u1ef3 kinh nguy\u1ec7t,&nbsp;c\u01a1 th\u1ec3 ng\u01b0\u1eddi ph\u1ee5 n\u1eef ph\u00f3ng th\u00edch m\u1ed9t tr\u1ee9ng (c\u00f3 \u0111\u00f4i khi l\u00e0 hai tr\u1ee9ng). <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong 24h sau khi tr\u1ee9ng r\u1ee5ng, hormone Progesterone \u0111\u01b0\u1ee3c s\u1ea3n sinh m\u1ed9t l\u01b0\u1ee3ng l\u1edbn \u0111\u1ec3 bi\u1ebfn \u0111\u1ed5i n\u1ed9i m\u1ea1c t\u1eed cung, gi\u00fap ph\u00f4i thai l\u00e0m t\u1ed5 &#8211; \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 qu\u00e1 tr\u00ecnh th\u1ee5 thai. Tr\u01b0\u1eddng h\u1ee3p ph\u00f4i thai kh\u00f4ng th\u1ec3 l\u00e0m t\u1ed5 \u1edf n\u1ed9i m\u1ea1c t\u1eed cung ho\u1eb7c kh\u00f4ng di\u1ec5n ra s\u1ef1 th\u1ee5 tinh th\u00ec hormone Progesterone v\u00e0 Estrogen s\u1ebd gi\u1ea3m m\u1ea1nh \u0111\u1ec3 chu\u1ea9n b\u1ecb cho giai \u0111o\u1ea1n h\u00e0nh kinh &#8211; ng\u00e0y cu\u1ed1i c\u1ee7a chu k\u1ef3 kinh nguy\u1ec7t, t\u1eed cung s\u1ebd lo\u1ea1i b\u1ecf l\u1edbp n\u1ed9i m\u1ea1c v\u00e0 m\u1ed9t chu k\u1ef3 kinh m\u1edbi b\u1eaft \u0111\u1ea7u.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t&nbsp;chu k\u1ef3 kinh nguy\u1ec7t&nbsp;ph\u1ed5 bi\u1ebfn th\u01b0\u1eddng \u0111\u01b0\u1ee3c ng\u00e0nh y khoa s\u1eed d\u1ee5ng l\u00e0 28 ng\u00e0y, nh\u01b0ng c\u0169ng c\u00f3 tr\u01b0\u1eddng h\u1ee3p k\u00e9o d\u00e0i t\u1eeb 25-35 ng\u00e0y.  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1eddi \u0111i\u1ec3m&nbsp;r\u1ee5ng tr\u1ee9ng&nbsp;s\u1ebd r\u01a1i v\u00e0o ng\u00e0y 14 \u2013 \u0111\u01b0\u1ee3c \u0111\u1ebfm ng\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u t\u1eeb ng\u00e0y \u0111\u1ea7u ti\u00ean c\u1ee7a k\u1ef3 kinh ti\u1ebfp theo. V\u00e0 th\u1eddi \u0111i\u1ec3m t\u1eeb ng\u00e0y 10 &#8211; ng\u00e0y 19 l\u00e0 th\u1eddi k\u1ef3&nbsp;d\u1ec5 th\u1ee5 thai, trong \u0111\u00f3 ng\u00e0y 13 &#8211; ng\u00e0y 15 c\u1ee7a chu k\u1ef3 l\u00e0 th\u1eddi \u0111i\u1ec3m c\u00f3 kh\u1ea3 n\u0103ng th\u1ee5 thai cao nh\u1ea5t c\u1ee7a chu k\u1ef3.  <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cach-tinh-chu-k\u1ef3-kinh-nguy\u1ec7t-d\u1ec3-tranh-thai-an-toan\">C\u00e1ch t\u00ednh chu k\u1ef3 kinh nguy\u1ec7t \u0111\u1ec3 tr\u00e1nh thai an to\u00e0n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ecnh th\u01b0\u1eddng, chu k\u1ef3 kinh nguy\u1ec7t c\u1ee7a ng\u01b0\u1eddi ph\u1ee5 n\u1eef k\u00e9o d\u00e0i kho\u1ea3ng 28 ng\u00e0y. Th\u1eddi \u0111i\u1ec3m r\u1ee5ng tr\u1ee9ng th\u01b0\u1eddng s\u1ebd r\u01a1i v\u00e0o ng\u00e0y gi\u1eefa th\u00e1ng, ng\u00e0y th\u1ee9 14 c\u1ee7a chu k\u1ef3. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u1ed9t chu k\u1ef3 kinh nguy\u1ec7t chu\u1ea9n 28 ng\u00e0y c\u00f3 th\u1ec3 chia th\u00e0nh 3 th\u1eddi \u0111i\u1ec3m sau: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u1eddi \u0111i\u1ec3m tr\u00e1nh thai t\u01b0\u01a1ng \u0111\u1ed1i (quan h\u1ec7 t\u01b0\u01a1ng \u0111\u1ed1i an to\u00e0n)\n<ul class=\"wp-block-list\">\n<li>Ng\u00e0y \u0111\u1ea7u ti\u00ean c\u1ee7a chu k\u1ef3 kinh nguy\u1ec7t (ng\u00e0y b\u1eaft \u0111\u1ea7u c\u00f3 kinh) cho \u0111\u1ebfn ng\u00e0y th\u1ee9 9 c\u1ee7a chu k\u1ef3 kinh nguy\u1ec7t.<\/li>\n\n\n\n<li><span style=\"font-size: revert; color: var(--cs-color-primary); font-family: var(--cs-font-base-family), sans-serif; font-style: var(--cs-font-base-style); font-weight: var(--cs-font-base-weight); letter-spacing: var(--cs-font-base-letter-spacing);\">N\u1ebfu quan h\u1ec7 trong th\u1eddi gian n\u00e0y th\u00ec kh\u1ea3 n\u0103ng c\u00f3 thai l\u00e0 v\u00f4 c\u00f9ng th\u1ea5p, tuy nhi\u00ean kh\u1ea3 n\u0103ng c\u00f3 thai v\u1eabn c\u00f3 th\u1ec3 x\u1ea3y ra, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n h\u01a1n th\u00ec v\u1eabn n\u00ean s\u1eed d\u1ee5ng bao cao su trong khi quan h\u1ec7 s\u1ebd t\u1ed1t h\u01a1n.<\/span> <\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u1eddi \u0111i\u1ec3m d\u1ec5 mang thai (quan h\u1ec7 nguy hi\u1ec3m)\n<ul class=\"wp-block-list\">\n<li>\u0110\u00e2y l\u00e0 kho\u1ea3ng th\u1eddi gian d\u1ec5 mang thai (nguy hi\u1ec3m trong quan h\u1ec7 t\u00ecnh d\u1ee5c \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi mu\u1ed1n tr\u00e1nh thai) \u0111\u01b0\u1ee3c t\u00ednh t\u1eeb ng\u00e0y r\u1ee5ng tr\u1ee9ng c\u1ed9ng ho\u1eb7c tr\u1eeb th\u00eam 5 ng\u00e0y tr\u01b0\u1edbc v\u00e0 sau \u0111\u00f3. <\/li>\n\n\n\n<li>Nh\u1eefng ng\u01b0\u1eddi c\u00f3 chu k\u1ef3 kinh nguy\u1ec7t \u0111\u1ec1u 28 ng\u00e0y th\u00ec ng\u00e0y r\u1ee5ng tr\u1ee9ng s\u1ebd l\u00e0 ng\u00e0y gi\u1eefa th\u00e1ng, ng\u00e0y th\u1ee9 14 c\u1ee7a chu k\u1ef3 v\u00e0 t\u1eeb ng\u00e0y 10 &#8211; 19 \u0111\u01b0\u1ee3c xem l\u00e0 kho\u1ea3ng th\u1eddi gian th\u1ee5 thai d\u1ec5 nh\u1ea5t. <\/li>\n\n\n\n<li>V\u00ec v\u1eady, khi quan h\u1ec7 t\u00ecnh d\u1ee5c trong nh\u1eefng ng\u00e0y n\u00e0y, kh\u1ea3 n\u0103ng c\u00f3 thai s\u1ebd l\u00ean t\u1edbi tr\u00ean 90%. N\u1ebfu b\u1ea1n \u0111ang mong mu\u1ed1n c\u00f3 em b\u00e9 th\u00ec \u0111\u00e2y th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t kho\u1ea3ng th\u1eddi gian tuy\u1ec7t v\u1eddi \u0111\u1ec3 bi\u1ebfn n\u00f3 th\u00e0nh hi\u1ec7n th\u1ef1c. C\u00f2n n\u1ebfu ng\u01b0\u1ee3c l\u1ea1i, b\u1ea1n nh\u1edb th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p an to\u00e0n khi quan h\u1ec7 \u0111\u1ec3 tr\u00e1nh mang thai ngo\u00e0i \u00fd mu\u1ed1n.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u1eddi \u0111i\u1ec3m tr\u00e1nh thai hi\u1ec7u qu\u1ea3 (quan h\u1ec7 an to\u00e0n)\n<ul class=\"wp-block-list\">\n<li>Kho\u1ea3ng th\u1eddi gian n\u00e0y \u0111\u01b0\u1ee3c t\u00ednh t\u1eeb ng\u00e0y th\u1ee9 20 \u0111\u1ebfn ng\u00e0y \u0111\u1ea7u c\u1ee7a chu k\u1ef3 kinh nguy\u1ec7t k\u1ebf ti\u1ebfp. \u0110\u00e2y l\u00e0 th\u1eddi \u0111i\u1ec3m tr\u1ee9ng \u0111\u00e3 r\u1ee5ng n\u00ean s\u1ebd kh\u00f4ng th\u1ec3 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng th\u1ee5 thai. V\u00ec th\u1ebf, v\u1edbi nh\u1eefng ai ch\u01b0a chu\u1ea9n b\u1ecb tinh th\u1ea7n l\u00e0m m\u1eb9 th\u00ec \u0111\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 th\u1eddi \u0111i\u1ec3m an to\u00e0n cho c\u00e1c \u201ccu\u1ed9c y\u00eau\u201d.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u01b0ng kh\u00f4ng ph\u1ea3i m\u1ecdi ng\u01b0\u1eddi ph\u1ee5 n\u1eef \u0111\u1ec1u c\u00f3 chu k\u1ef3 kinh \u0111\u1ec1u v\u00e0 chu\u1ea9n 28 ng\u00e0y. V\u1eady c\u00e1ch t\u00ednh chu k\u1ef3 kinh nguy\u1ec7t \u0111\u1ec3 tr\u00e1nh thai v\u1edbi nh\u1eefng chu k\u1ef3 kinh kh\u00e1c 28 ng\u00e0y nh\u01b0 th\u1ebf n\u00e0o? <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.docosan.com\/blog\/wp-content\/uploads\/2021\/11\/Cach-tinh-ngay-tranh-thai-theo-chu-ky-kinh-nguyet-1.jpg\" alt=\"C\u00e1ch t\u00ednh ng\u00e0y tr\u00e1nh thai theo chu k\u1ef3 kinh nguy\u1ec7t\" class=\"wp-image-34787\"\/><figcaption class=\"wp-element-caption\">Cach-tinh-ngay-tranh-thai-theo-chu-ky-kinh-nguyet<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch t\u00ednh ng\u00e0y tr\u00e1nh thai theo chu k\u1ef3 kinh nguy\u1ec7t \u0111\u01a1n gi\u1ea3n nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-size: revert; color: var(--cs-color-primary); font-family: var(--cs-font-base-family), sans-serif; font-style: var(--cs-font-base-style); font-weight: var(--cs-font-base-weight); letter-spacing: var(--cs-font-base-letter-spacing);\">Ng\u00e0y c\u00f3 kinh \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 ng\u00e0y \u0111\u1ea7u c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng ra m\u00e1u. Tr\u01b0\u1edbc \u0111\u00f3 c\u00f3 th\u1ec3 c\u00f3 v\u00e0i gi\u1ecdt m\u00e1u th\u00ec ng\u00e0y \u0111\u00f3 c\u00f3 th\u1ec3 b\u1ecf qua, kh\u00f4ng c\u1ea7n t\u00ednh. V\u1edbi chu k\u1ef3 kinh 32 ng\u00e0y th\u00ec&nbsp;th\u1eddi \u0111i\u1ec3m r\u1ee5ng tr\u1ee9ng&nbsp;d\u1ec5 th\u1ee5 thai c\u0169ng s\u1ebd c\u1ed1 \u0111\u1ecbnh t\u01b0\u01a1ng \u1ee9ng. Chu k\u1ef3 h\u01a1n 28 ng\u00e0y c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c suy \u0111o\u00e1n sau: <\/span>\n<ul class=\"wp-block-list\">\n<li>L\u1ea5y th\u1eddi \u0111i\u1ec3m r\u1ee5ng tr\u1ee9ng c\u1ee7a chu k\u1ef3 kinh 28 ng\u00e0y l\u00e0m chu\u1ea9n, t\u1ee9c ng\u00e0y 14 l\u00e0 ng\u00e0y tr\u1ee9ng r\u1ee5ng v\u00e0 ng\u00e0y 10 &#8211; ng\u00e0y 19 l\u00e0 th\u1eddi k\u1ef3 d\u1ec5 th\u1ee5 thai. <\/li>\n\n\n\n<li>V\u1edbi chu k\u00ec kinh nguy\u1ec7t c\u1ee9 d\u00e0i th\u00eam m\u1ed9t ng\u00e0y th\u00ec ng\u00e0y d\u1ec5 th\u1ee5 thai s\u1ebd c\u1ed9ng th\u00eam m\u1ed9t ng\u00e0y. <\/li>\n\n\n\n<li>Ng\u01b0\u1ee3c l\u1ea1i v\u1edbi ch\u1ecb em c\u00f3 chu k\u1ef3 kinh ng\u1eafn h\u01a1n 28 ng\u00e0y th\u00ec ng\u00e0y d\u1ec5 th\u1ee5 thai s\u1ebd tr\u1eeb \u0111i 1 ng\u00e0y. <\/li>\n\n\n\n<li>V\u00ed d\u1ee5 d\u1ec5 hi\u1ec3u h\u01a1n l\u00e0 n\u1ebfu chu k\u1ef3 kinh l\u00e0 32 ng\u00e0y th\u00ec th\u1eddi \u0111i\u1ec3m d\u1ec5 th\u1ee5 thai s\u1ebd v\u00e0o ng\u00e0y 14 (= 10 + 4) \u0111\u1ebfn ng\u00e0y 23 (= 19 + 4), v\u00e0 ng\u00e0y r\u1ee5ng tr\u1ee9ng c\u00f3 th\u1ec3 r\u01a1i v\u00e0o ng\u00e0y 18 (= 14 + 4) c\u1ee7a chu k\u1ef3.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>V\u1edbi chu k\u1ef3 kinh kh\u00f4ng \u0111\u1ec1u t\u1eeb 26 &#8211; 30 ng\u00e0y, v\u1eabn l\u1ea5y th\u1eddi \u0111i\u1ec3m r\u1ee5ng tr\u1ee9ng c\u1ee7a chu k\u1ef3 kinh 28 ng\u00e0y l\u00e0m chu\u1ea9n, t\u1ee9c ng\u00e0y 14 l\u00e0 ng\u00e0y tr\u1ee9ng r\u1ee5ng v\u00e0 ng\u00e0y 10 &#8211; ng\u00e0y 19 l\u00e0 th\u1eddi k\u1ef3 d\u1ec5 th\u1ee5 thai, ta ph\u1ea3i t\u00ednh to\u00e1n 2 th\u1eddi k\u1ef3 d\u1ec5 th\u1ee5 thai:\n<ul class=\"wp-block-list\">\n<li>M\u1ed9t l\u00e0 chu k\u1ef3 ng\u1eafn nh\u1ea5t<\/li>\n\n\n\n<li>Hai l\u00e0 chu k\u1ef3 d\u00e0i nh\u1ea5t <\/li>\n\n\n\n<li>Sau \u0111\u00f3 k\u1ebft h\u1ee3p 2 chu k\u1ef3 n\u00e0y l\u1ea1i v\u1edbi nhau. <\/li>\n\n\n\n<li>Theo \u0111\u00f3, v\u1edbi chu k\u1ef3 26 ng\u00e0y th\u00ec th\u1eddi \u0111i\u1ec3m d\u1ec5 th\u1ee5 thai r\u01a1i v\u00e0o ng\u00e0y th\u1ee9 8 \u0111\u1ebfn ng\u00e0y th\u1ee9 17 c\u1ee7a chu k\u1ef3. Chu k\u1ef3 30 ng\u00e0y th\u00ec th\u1eddi k\u1ef3 th\u1ee5 thai v\u00e0o ng\u00e0y 12 \u0111\u1ebfn ng\u00e0y 21 c\u1ee7a chu k\u1ef3. K\u1ebft h\u1ee3p hai chu k\u1ef3 n\u00e0y l\u1ea1i, th\u1eddi \u0111i\u1ec3m d\u1ec5 th\u1ee5 thai c\u1ee7a b\u1ea1n \u1edf ng\u00e0y th\u1ee9 9 \u0111\u1ebfn ng\u00e0y th\u1ee9 18 v\u00e0 ng\u00e0y r\u1ee5ng tr\u1ee9ng s\u1ebd r\u01a1i v\u00e0o ng\u00e0y 8 &#8211; 21 c\u1ee7a chu k\u1ef3.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t khi \u0111\u00e3 t\u00ednh \u0111\u01b0\u1ee3c ng\u00e0y r\u1ee5ng tr\u1ee9ng theo chu k\u1ef3 kinh th\u00ec kh\u1ea3 n\u0103ng tr\u00e1nh mang thai s\u1ebd cao h\u01a1n. Tuy nhi\u00ean, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng c\u00f3 x\u00e1c xu\u1ea5t tr\u00e1nh thai th\u1ea5p k\u1ec3 c\u1ea3 trong nh\u1eefng ng\u00e0y c\u1eadn k\u1ec1 ng\u00e0y r\u1ee5ng tr\u1ee9ng v\u00e0 v\u1edbi nh\u1eefng ph\u1ee5 n\u1eef hay b\u1ecb rong kinh th\u00ec kh\u00f4ng n\u00ean \u00e1p d\u1ee5ng. N\u1ebfu b\u1ea1n mu\u1ed1n tr\u00e1nh thai \u0111\u01b0\u1ee3c an to\u00e0n h\u01a1n th\u00ec n\u00ean \u00e1p d\u1ee5ng th\u00eam c\u00e1c bi\u1ec7n ph\u00e1p tr\u00e1nh thai an to\u00e0n kh\u00e1c nh\u01b0 s\u1eed d\u1ee5ng bao cao su khi quan h\u1ec7 ho\u1eb7c \u0111\u1eb7t v\u00f2ng \u00e2m \u0111\u1ea1o ho\u1eb7c d\u00f9ng <a href=\"https:\/\/www.docosan.com\/blog\/phu-san\/thuoc-tranh-thai-1-thang-1-vien\/\" target=\"_blank\" rel=\"noreferrer noopener\">thu\u1ed1c tr\u00e1nh thai 1 th\u00e1ng 1 vi\u00ean<\/a>, &#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>B\u00e0i vi\u1ebft \u0111\u01b0\u1ee3c tham kh\u1ea3o b\u00e1c s\u0129 v\u00e0 c\u00e1c ngu\u1ed3n t\u01b0 li\u1ec7u \u0111\u00e1ng tin c\u1eady trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1ch t\u00ednh ng\u00e0y tr\u00e1nh thai theo chu k\u1ef3 kinh nguy\u1ec7t l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u1eb1m gi\u00fap cho c\u00e1c ch\u1ecb em c\u00f3 th\u1ec3 ph\u1ea7n n\u00e0o ch\u1ee7 \u0111\u1ed9ng h\u01a1n trong vi\u1ec7c ph\u00f2ng mang thai ngo\u00e0i k\u1ebf ho\u1ea1ch sau khi quan h\u1ec7 t\u00ecnh d\u1ee5c. H\u00e3y c\u00f9ng Doctor c\u00f3 s\u1eb5n h\u1ecdc c\u00e1ch t\u00ednh chu k\u1ef3 kinh nguy\u1ec7t [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":90394,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[16],"tags":[],"class_list":["post-104013","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-phu-san"],"acf":[],"featured_image_src":"https:\/\/www.docosan.com\/blog\/wp-content\/uploads\/2021\/11\/Cach-tinh-ngay-tranh-thai-theo-chu-ky-kinh-nguyet-2-600x400.jpg","featured_image_src_square":"https:\/\/www.docosan.com\/blog\/wp-content\/uploads\/2021\/11\/Cach-tinh-ngay-tranh-thai-theo-chu-ky-kinh-nguyet-2-600x533.jpg","author_info":{"display_name":"D\u01b0\u1ee3c s\u0129, Th\u1ea1c s\u0129 Nguy\u1ec5n Th\u1ecb Thanh T\u00fa","author_link":"https:\/\/www.docosan.com\/blog\/author\/tunguyen\/"},"_links":{"self":[{"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/posts\/104013","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/comments?post=104013"}],"version-history":[{"count":0,"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/posts\/104013\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/media\/90394"}],"wp:attachment":[{"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/media?parent=104013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/categories?post=104013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.docosan.com\/blog\/wp-json\/wp\/v2\/tags?post=104013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}