Me and my boyfriend have had unprotected sex a couple of times but in the past we also used condoms. But a while ago I was using the bathroom and I wiped and it was almost like I was spotting but it stopped within the next day. Also my nipples have been hurting a lot and I've been eating large amounts of food and have had a lot of stomach pains... Could I possibly be pregnant. I was supposed to start my period today and I haven't had cramps or anything.