I am 17 and my boyfriends 20 we have been together about 5 months and we have been having sex for 2 months now. The last time I had my period was in August and we are now in October... every time we have sex he pulls out or he doesn't even reach climax... about a week or two ago I took two clear blue digital pregnancy tests and they both came out negative but I still haven't had my period? I have no symptoms plus my periods super irregular so I don't know what to think enymore am I pregnant or not? I need opinions, help?