If someone nuts in you on april 12 and another person nuts in you 3weeks aftet that and you get pregnant which one will be the father?
that would depend on your period dates.
The only way to find something like that out is by finding out how far along you are and basing it on the days that you had unprotected sex, if you still aren't sure your local child support office should be able to do genetic testing. I work for child support in my state and we've had this happened a couple of times.