okk so im 19 years old. my period has always been perfectly normal. never late, never not 'normal'. i've been having unprotected sex with my ex for the past 3 years, he does pull out every time before he cums. We had sex in july, august, and september. The last time we had sex was the 4th or 5th of sepember. before that was the around the 11th of august (i keep track) and i did get my period in september but it was NOT normal at all. It was a normal period for the first day and after that it was so light, i didnt even need a tampon or anything. I have been under a little stress lately but I've been under stress before and its never done this before. I feel like i get these tiny little cramps in my lower stomach like where i would get normal period cramps but I dont have my period and im not due yet. I took a pregnancy test and it came back negative. Im a little concerned. Everywhere i look i see baby things. Im scared. Can someone please help me.. I dont kno whats wrong with me...