Ok here's the story...
Basically, I'm an absolute fool. I've just been on holiday, and on a very drunken night I allowed a girl I was getting close to during the whole holiday to convince me to have unprotected sex, being in a very drunken state I allowed this to happen. She said she's on the pill and has been checked, and being in the condition I was, this was good enough.
There was only very brief penetration, but my main concern is that for a few days after my penis was very very itchy, and it only died down about 4 or 5 days after the incident. Do I need to see someone?
All help much appreciated.