Urology

[huntbball11]

I am a male and For about 3 years now I have had this problem off and on. After i masturbate a lot of times i feel the need to go to the bathroom. When i do i get an awful pain in my urethra i think or it could be the tip of the penis. This pain is awful and i feel the need to pee again. When i do pee again it feels better sometimes but when im done the pain comes back full force..Peeing over and over just makes it worst. I have never peed and blood. This normally lasts about an hour or two and i am scared to masturbate because of this pain. Today and this rarely happens i peed at school and got an uncomfortable pain in my urethra that has lasted almost 4 hrs. now.. I havent masturbated now in months. I also when i take a poop pee what looks to be mucus(discharge). It is thick and yellowish and it just floats in the toilet. I have twice masturbated and the sperm was a yellowish color. That problem hasn't happened long but I really need some advice. I have seen 2 urologists and they said it was a puberty thing and i think they were wrong. Over the past three years when I pee it splashes and goes everywhere. There is a small bump on the head of my penis near the hole but the urologists just said that was extra skin. Normally peeing is always uncomfortable but when i masturbate this problem doesn't always happen. I am a 15 yr. old male haven't had sex but recieved oral sex when i was 10 by some1 of the same age. No sperm came out. Hadn't hit puberty yet. Surely this wasn't anything. Please help!!!

Please get back with me.
Thanks