Confused about period/posible pregnancy
Hey My name is Jen, and I am utterly confused about this. So the last time I had sex was around the end of June. My period is around the 15-19 it comes around then. On the 15th last month I went to ichoice and got tested because I had unprotected sex(but my ex swears nothing got inside of me) and the lady said that it was negative. But since I hadn't missed my period yet, it could still be positive. So I got my period on about July 16th or 17th. It last a few days(thats normal, but it was very light, somewhat normal) and then I kept freaking out about being pregnant because I thought I was gaining weight and feeling a pulse in my abdomen. So today I started what I thought was my period, a week early. But it is just brownish liquid. So I freaked out some more.. took a first response test and it said negative. What does all of this mean? Is it posible I could be pregnant? (I'm 16, so some people have told me it could just be my age and my cycle is changing) any information, or input helps!