I had sex with a girl about a week ago. I discovered that my penis itches me and I feel some burning sensation when I pee. I actually esed condom before I penetrated her but before I put on the condom I brushed her clitoris with my penis. Am I having std?

You may have an STD, but only a doctor can tell you that. Pain is a sign that something is wrong. Please have this checked out asap.

You should go get yourself checked for a STD, itching could indicate Thrush, also pain is not usual in the genitals.

In future always put on your condom before any sexual contact with anothers genitals.