After I Ejaculate my penis stings and hurts, if I try to do anything sexual after it hurts.
Can anyone Help me ? :(

No can't help right now but I would see your doctor tomorrow. It could be an STD if you have had unprotected sex lately. Maybe explain more. Past history, etc.

Its been this way before I had sex. About age of 15, could it be a bacterial infection

Nothing should HURT when you ejaculate or urinate. Get it checked out by your doctor asap. Even if you think its an infection, why would you not see your doctor for proper medication and get rid of it!

Yes, you need to see a doctor, and you don't need to wait

You make it sound like it has been that way for a while, never wait

Pain is your bodies way of saying that something's wrong. I agree with everyone else, time to see your doctor.

OK I will see a doctor