I have really irregular periods. Sometimes I will skip one month, sometimes two, but usually when i have my period, I go heavily enough to fill a large tampon. Last week, I had sex with my boyfriend a lot, and before that, it had been six weeks since we had had sex. We always use a condom, and we have never had unprotected sex. About 2 days ago, on Sunday, I thought I had started my period, except it was very light and brown, but i could tell there was some blood too, albeit a little. On Saturday we had used lube for the first time, so i thought the brown stuff may have been left over lube. I expected my period to get heavier, but today it is still really light. I am worried that it might actually be spotting instead of my period. I am 19, in college, and so scared right now. I was hoping that perhaps someone could give me some insight on whether I should be completely freaking out right now....the week before last, i was extremely stressed out because of some problems my boyfriend and i had to clear up before returning to college. Could this be stress related?