Hi I Am 19 Year Old Male. I Have A

Hi i am 19 year old male. I have a problem, but do not know wheather if it is a problem or not. I used to do masturbation like i take my penis into my legs and start pleasuring at time of ejaculation i never ejaculate but used to stop it and does it every day i did it for 2 years and i was 16 and now i am 19 and its been 8 or 9 months i stoped it and now i just do masturbation by using my hand once a month or twice a month. But, whenever i go to urnie and create pressure on it some white colour fluid come out whenever or daily when i create pressure while urination i have joint pain may be due to it why this fluid comes out and i haven't done sex yet but sometimes i get hard erection but when my mind a little divert it goes out and semen does not shoots out of my penis it just spills out even if i stop masturbating for 2 months or 3 months. What is actually happening with me? please let me know about each and everything i asked you i am waiting. Thank You!!