So i've pretty much had these sharp pains since 7th grade and I don't know what they are. It hardly ever happens, maybe like every 4 or 5 months? I had one yesterday and i don't know what the cause is. My period isn't supose to come for another 2 weeks, but I did have unprotected sex on the 6th, but I don't think that'd be the case since I've been having them for awhile. What could the sharp pains be?