How many days can the earliest cohabitation detect pregnancy

Normal if sexual life in ovulation, generally in the fertilized egg implantation after 1 day after the detection of blood HCG, can detect HCG elevation, that is, in ovulation after about 7 days, if there is pregnancy can detect bleeding HCG elevation. If the urine pregnancy test is carried out, generally about 10 days after ovulation, the urine pregnancy test paper can be used to detect the positive urine pregnancy test, but because the test paper is affected by many factors, there are differences in sensitivity, etc. If the urine pregnancy test paper with poor sensitivity has to be detected, the time to be detected will be postponed. If you want to make sure that intrauterine pregnancy is confirmed by ultrasound examination of uterine appendages, you can see the pregnancy sac in the uterus 35 days after menstruation stops, that is, about 20 days after cohabitation. You can see the pregnancy sac, yolk sac, fetal bud and fetal heart in the uterus 45 days after menstruation stops. Normally, about 30 days after cohabitation, you may see a clear intrauterine pregnancy in the uterus.