stupid drunk hookup.

I've had a cold sore for a week or two now. it was getting better until I went out, got drunk, and hooked up with someone. we kissed (of course) and then he went down on me so now i think I have genital herpes because of it and I now have two cold sores. parts just look like razor burn or something, but other areas are sore, red, and crusty. I've been having discharge too. I don't know what to do. part of me just hopes i'm sore from hooking up but I don't think I'm so lucky.