Hello. i recently began taking sprintec birth control rounghly 2 weeks ago ive been on it for 15 days i started on a sunday start. As of yesterday I woke up with welts all over my body, huge one one that covers my side and my hip, my arms, my eye, hands, knees, underarms, thighs, calves behind my ears. it itches but they hurt also.. unfortunatly after being the pill for 15 days my boyfriend and i were having intercourse and i let him cum inside me this is the first time ive ever let any one ejaculate inside me, then only a few houres later im covered in welts!!. Could I be allergic to semen, or is it my birth control. please help