Approx 2 and a half months ago, I had a normal period that lasted 7 days. 4 days after this period had ended I began to bleed, very lightly. There was also something that looked like tissue in it, or blood clots. Between this period and my next I had unprotected sex with my fiance, and he came inside of me. When I was again due for my period, I had really light spotting. So light in fact that unless I was whipping myself nothing would come out. And even when I whipped myself it was just light spotting. This stopped after about 2-3 days. Now its been about...2-3 weeks and this is happening again. But still no real period! Am I pregnant or do you think its something else. I should also mention that I tried a home pregnancy test, the kind that you pee in a cup and the circle changes color when the test is done. But I didnt look at the cup closely and peed to the top of the cup when I was only supposed to pee in about 1/4 of the cup. I recieved a negative result, but could the fact that I filled the entire cup have messed with the result? Thanks.