I just had unprotected sex with a girl that I just met today. what are my chance!

Probably pretty high, since she's a slag and you're a whore.

Without trying to be rude, i find this a stupid question. Why would you ever put yourself under pressure like this when protection is readily available. How can anyone answer this? Saying the chances are high and low doesn't mean anything.

Pretty high. Shes a skank. Wht a stupid thing to do. Next you may hear that you are going to be a Daddy and have to pay her child support for the next 20 years.

A little late to be worrying about your indiscretions, isn't it?
If you're worried about it - see a doctor for evaluation.

Um yea. She could of lied. And I'N the 5 months after she could of been wut 10 guys. So ya u should be worried.

Um yeah

depends on what kind of std's for example, if its HIV it hard to tell sometimes it takes 7 months to know

Uhm... pretty high. Why did you even bone someone like that to begin with?
Get tested just in case.

better be checked to be on the safe side. a blood test should tell you if you got any disease from her.