I have noted pain inside my penis (Not at head) any happens sometimes when i sit, the pain is internal, and a painful throb that will go on for a few minuets.... any ideas???
I'll second that Tick. A doctor is really your only option.
It could be something simple like a pulled muscle, or something serious like an STD. The only way to know for sure is to see a medical professional. We can't run tests on you, we can only guess.