Mayi aliyense wamtsogolo wa miyezi yonse isanu ndi iwiri akuyembekeza kukomana ndi mwana wake ndikuyang'ana njira zonse zopezera nthawi yobereka. Kuwerengera zaka zowonongeka ndikofunikira kwambiri kuti mudziwe tsiku lopereka. Pali njira zambiri zowerengera nthawi ya mimba ndi kubala: mwezi uliwonse, kuyesa magazi, chorionic gonadotropin mlingo, ndi kuyesa kwa ultrasound. Tidziŵe njira zazikulu zodziwira nthawi ya mimba ndi kubala.
Kuwerengetsa mimba pamwezi ndi ovulation
Kuti mudziwe nthawi yomwe ali ndi mimba komanso kubweranso kumeneku, kumapeto kwa msambo kumagwiritsa ntchito njira ya Negele. Kwa ichi, kuyambira tsiku lakumapeto kwako, ndikofunika kutenga miyezi itatu ndikuwonjezera masiku asanu ndi awiri. Kotero, ngati tsiku loyamba la kumapeto kwa kumapeto kwake linali pa 3 April, mawu oti chiwerengero choyembekezeredwa chidzakhala pa 10 January. Njira yowerengera tsiku la kubadwa ndi yoyenera kwa iwo omwe ali ndi nthawi yokha masiku ndikukhala masiku 28.
Awonetsetse kuti nthawi yothandizira ovulation ndi yotheka ngati mayi ali ndi nthawi yokha. Choncho, ndi masiku 28 a masiku amwezi, ovulation amapezeka tsiku la 14. Ngati mkazi amakumbukira bwino tsiku la kugonana popanda chitetezo, ndiye kuti sikudzakhala kovuta kuwerengera tsiku la kubadwa.
Kuwerengera zaka zonyansa za chorionic gonadotropin (hCG)
Chorionic gonadotropin ndi hormone yomwe imadzuka pa tsiku lachisanu la mimba ndipo ikhoza kukhala yoyamba ya mimba. Tsiku lotsatira, mlingo wa hCG mu magazi ukuwonjezeka. Kawirikawiri, mlingo wa chorionic gonadotropin umakula ndi 60-100% masiku awiri kapena atatu. Pali zofunikira za kukula kwa chorionic gonadotropin pa nthawi inayake ya mimba. Mwachitsanzo, pa masabata 1 mpaka 2 a mimba, mlingo wa β-HCG ndi 25 - 156 mU / ml, pamasabata 3 mpaka 4 - 1110-31,500 mU / ml, ndipo pamasabata asanu akhoza kufika 82,300 mU / ml. Choncho, kuphunzira za kukula kwa homoni iyi, kudzawerengera nthawi yomwe ali ndi mimba kumayambiriro oyambirira.
Chiwerengero chokwanira cha msinkhu wokongola
Chodziwikiratu kuti nthawi yeniyeni yobwera ikhoza kukhala yeniyeni yoyezetsa magazi ndi ultrasound. Poyezetsa magazi, kukula kwa chiberekero kumatsimikiziridwa, chomwe chimagwirizana ndi nkhuku ya nkhuku pamasabata 4, komanso pamasabata asanu ndi atatu. Zomwe zimamuchitikira dokotala wa zachipatala, amatha kudziwa nthawi yomwe ali ndi mimba komanso yobereka.
Kuwerengedwa kwa mimba pa ultrasound (ultrasound) kumaphunzitsanso m'mayambiriro oyambirira (mpaka masabata 8 mpaka 12). Pambuyo pa masabata khumi ndi awiri, kukula kwa mwanayo kumadalira maonekedwe a chitukuko chake (zozizwitsa zamagazi mu placenta, matenda a intrauterine, zomwe zimachitika pakati pa amayi oyembekezera). Pambuyo pa sabata lachisanu ndi chiwiri la mimba, kulondola kwa kuzindikira kuti nthawi yayitali ya mimba imachepa pang'onopang'ono. Choncho, ngati mayi atapezeka kuti ali ndi intrauterine kuchepa kukula m'miyezi itatu yachitatu, ndiye kuti musakhumudwitse ndi kulira, mwina ali ndi zipatso zazing'ono.
Kuwerengera kwa nthawi yogonana kwa mwana woyamba kubadwa
Amishonale amayamba kumva kuti mwanayo akuyenda kuchokera masabata 18 mpaka 20, ndipo omwe amatha masabata 15 mpaka 16. Izi ndi chifukwa chakuti mphamvu za mayi wamtsogolo, omwe kale adadziwa chisangalalo cha amayi, ndi apamwamba kwambiri kuposa omwe amatha zonsezi nthawi yoyamba.
Tinafotokozera njira zosiyanasiyana zomwe tingathe kudziwa kuti ndi nthawi yotani yobereka komanso kalendala, kalendala, ma tebulo ndi ma tebulo omwe angagwiritsidwe ntchito pazaka zazing'ono zomwe zimagwiritsidwa ntchito osati amayi okhawo komanso amayi awo. Sitiyenera kuiwalika kuti tsiku la kubadwa kumeneku likufanana ndi masabata 40 a mimba, ndipo kubadwa kwachibadwa kungayambike kuyambira masabata 37 mpaka 42.