Hey so in October I had unprotected sex and didn't get my period for like a month and a half but then I got it and thought it was all good, and now I haven't had another period in almost 3 months! I took a pregnancy test and I'm not pregnant but don't exactly know what this could be! For the past couple of days I have been having super dark black spotting but still no period! I've had my period since I was like 13 and have always had irregular period but only like 45 days a part! I'm 16 so I can't really talk to my mom about it since she doesn't know I'm sexually active! Should I be worried, what should I be doing??