So I’m 17 weeks and 4 days pregnant . Last time I had intercourse with my ex boyfriend was June 4 and the start date to my last period was June 26 . But I had intercourse with someone else July 16 and I thought it was his baby since I got my period after having intercourse with my ex . But it doesn’t quite make sense considering the fetus age. Is the baby my ex boyfriends or the other guy ?