Alright, I'm 17 years old to start. I'm a month later on my peroid and I'm concerned. I took a pregnancy test about a week or two after I was supposed to get my period- NEGATIVE. I just tested again 2 days ago and- NEGATIVE. I'm confused. I'm irregualr, but never this late. At the most, a week. It runs in the family. I've been spotting on and off for 2 weeks and i don't know why. I have no severe cramping or any other pregnancy symptoms. What's wrong with me? PLESE HELP!