I got trapped on chatroulette.

I'm really freaking out right now. I'm fifteen and I just got trapped on Chatroulette... some gay thing. I'm straight but I wanted to try... And I showed my face. The guy didn't want money, just for me to continue and do things I didn't want to. I freaked out and left. When I came back, under another name, I asked if anyone had seen a video and I described myself a bit, they all said no, but I'm really scared he put it on the Internet.
Please help me.