I’m in need of some reassurance.. to cut a long story short me and my children’s father separated last year. We have remained friends. I had a period on 17th May and had sex with a guy I’d been having a fling with on the 28th May. I took the morning after pill the same day and I haven’t had sex with him since. I had some bleeding a few days after taking the pill and then a week later I experienced more bleeding which was heavier. Me and my children’s father had unprotected sex a few times after the bleeding. I’ve just found out I’m pregnant, after the initial shock I’m now worrying about who the dad is. My friends tell me that going by dates it’s not the guy I had a fling with but mumsnet are honest.