So, I m feeling some tugging on my belly button and eveywhere I read it all says that it is because of pregnancy . However, I have never had sex, but In October of 2010 my boyfriend and I were just fooling around and he ejaculated and I thought he got some in that general area. So i ve taken 4 prego pee stick tests, one of which was done at a docs office, and they all said I was NOT pregnant . So that rules out what ive been reading online. What else could it be?