Hi I Am Shurui And I Am 14 Half Year

Hi I am Shurui and I am 14 half year ago their is a pumping feeling on the bottom tip of my penis before I do masterbate 4 time a week. I stopped but it still happen . After there is a burning feeling at the same place when I pee it happens too when I drink water. I Leck sperm when I see sexual things. Some time the area near my anis feel sor when erecting. Some time it pain from stomach down near bladder . Sorry for the bad spelling and grammar . Please help thanks