Conception

[JBennett87]

Question: So my mentural ended on 17 of March and had sex with guy A on my last day. We used a condom be he came on my vagina and rubbed it all over including the opening of the vagina then a week later I had sex with guy B on 24th of March but that was unprotected sex then I found out I was pregnant. So my question is who could of been the possible father??

[JBennett87]

The other guy meaning the unprotected sex one. I counted the days backwards and it leaded up to the unprotected sex guy.

[AnnieBrooke]

Depending on how regular your cycles are, it could be either guy.  Since this is May, go to the ob-gyn like right now, and get an ultrasound.  Tell them you aren't sure when your last period was and ask them to tell you the estimated due date of the baby, based on the embryo's measurements and developmental markers.  You're still early enough in the pregnancy for an ultrasound to be helpful in dating conception, but this won't be true for long.  When they give you an estimated due date, go home and plug it into an online conception calculator or just count back from it on a calendar 266 days.  But don't wait, the difference between March 17 and March 24 is only a week, and by the time you're in your 12th week of pregnancy, the margin for error in using an ultrasound for dating purposes is a week.  So you want to know right away.  

ps -- don't do this at the ER.  Go to a good ob-gyn.  Pay out of pocket if you have to, but get the ultrasound right away.  If you don't, the only other way to determine paternity is to wait until the baby is born and do a DNA test.