I usually get my period in the end of the month and it lasts till the beginning of the month. My boyfriend and I are sexually active but just recently had sex. Lately my period has been irregular, I don't know why. I was supposed to get my period by the end of December but I didn't. I had sex for the first time with him and I just got my period 2 days after. We were having sex for a long time until he pulled out and he came. Then we went back to it. We stopped and he showered then we did it again and he didn't pull out because he didn't feel anything but I continued bleeding. At times his would come out. The next morning we woke up and did it again. He did not pull out. He said he wasn't really horny so he didn't feel anything. Of course I had back pain and stomach. I've been also light headed. Like I said I just got my period 2 days after and I've been very wet lately. My underwear had brown spots and were dripping wet. When is pee it was very dark and when I'd clean myself it was a little brown. This means I won't be pregnant right?