Patient's question:
I want to know, I had my period on 7/28, had sex with a friend on 7/31, and then had some spotting afterward. My period didn't finish until 8/5. I had sex with another person again on 8/7 and now I'm pregnant. I want to know, can I determine who the child is from this? Is it necessary to do a prenatal paternity test?Doctor's answer:
According to your description, sexual intercourse occurred with two different people at different times. On July 28th, you had your menstrual period, and after sexual intercourse on the 31st, there has been a small amount of vaginal bleeding ever since. It is absolutely impossible to get pregnant during this period. On August 7th, you had sexual intercourse with another person, and the probability of pregnancy with this person is relatively high. The estimated time of conception can be calculated based on the ultrasound report. If the two instances of sexual intercourse are not too close in time, the estimated time of conception can be calculated based on the earliest ultrasound report, with a time difference of four days.