Ok... I'm 21, have had a few partners the last couple of months. I recently had a rash and was given by a doctor some cream to try, the rash looked just like circles of dry skin, and wasn't itchy. The cream made it go away, but I think a bit stayed because I started getting dry skin again. So I started to get scared. And the more I look at my penis the more I start to notice stuff... I have very very tiny little bumps around my knob, if I pull the skin I can see it a little bit. Than one night I think I might have had small discharge of a grey cloudy liquid, but only once. Haven't had any since. Than the next night and now for 3 days it always feels like I have to pee, right after I have already peed. And now the opening of my penis it is normal color unless I rub it a but and it looks like a very very small red bump and I think its starting to feel like a pinch... please help, I'm getting scared... thanks for anyone who answers.

Unfortunately we cannot diagnose you over the internet. Time to go back to the doctor to check for an STD.

Any idea what it could be?

It could be an STI, but without doing the proper lab work and a physical exam, I can't tell you for sure. Please see a doctor.