OK so me and my husband had a split for about two months I started talking to this guy but I've been home for a couple years I slept with him on April 7 and I was on the last day of my menstrual period I took Plan B on the 8 around midnight four days later on the 12 April I started bleeding very heavily it lasted about seven days so it ended on 18 of April and I got back with my husband and we been having sex since 11 April we were having sex every single day and till 31 April now I am pregnant and I'm nine weeks and one day I don't know who's baby it is The math that I've been doing it should be my husbands but I'm not sure can you guys please help i'm nine weeks and one day today plan B made me bleed on 12 April I finished bleeding on the 18th of April and we were nonstop having sex every day three times a day  need help