i having sex with my bf march 15 and 17 and around 24 of march . my dr.count my pregnancy from march 17 lmp but im not having period on that time.now i want to know if i get pregnant from march 15 even dr count my pregnancy from 17 of march.preggy 26 w and 2 days.due date is dec 22.pls if there someone understand i need your help to find when i concieved.