Okay I had sex about 12 days ago and he said the condom slipped up. He cummed after that. I didnt think nothing of it. I'm on birth control too, but ive switched brands. After a day or so I started lightly bleeding this brown mucus like stuff in my underwear, i done this for about five days. I looked it up. I found that it is old blood or I'm pregnant. I'm scared. I don't know whats going on. My period id supposed to start in a few days. HELP ME.!