Hello, I am a 17 year old and I have a problem. My penis when it gets erect hurts on the inside a lot, I have went to see a doctor about this problem already but they stated that everything seems healthy. They also took a Urine test still nothing had come up. Also when I masturbate it hurts for a little bit then goes away, but after ejaculation it begins to hurt again. No pain is felt during urination or ejaculation no blood in either of these. I have also lost my virginity, I stated that to the doctor as well and they said not to worry about that. My penis is circumcised and has gotten smaller/wont go fully erect. I am very concerned about this and I have looked over many websites trying to find the cause to my problem, but nothing remotely close to my problem please help.