I am a sexually active 18 year old girl. My period just ended-or was supposed to, the last day being last Friday. That Friday night I had sex but the condom broke whilst he came in me. I still had brownish blood that night and thought nothing of it as I usually get that on my last day. Saturday, Sunday and Monday I was fine but I had sex on Tuesday and bled a bit during which I disregarded as it was rougher than usual but now I have been heavily spotting for Tuesday, Wednesday and Thursday. Am I pregnant? What is wrong with me?