Hello im an 18 year old healthy male. About 6foot. Ive recently had a physical that was fine.. But for about 3days, i mastubated about twice a day, and the last time was prolonged masturbation and it hurt when I ejaculated,but everything was fine.but after I relized it was harder to urinate. After a few days small amounts of blood came out at the end of urinating.. And I've seen small amounts randomly. Also I have mastubated a few times since(about every other day) and it hurts when I ejaculate but I saw no blood.And for the first time blood came along with semen.. I was thinking it is just overmasturbating but I want to get a pros.ive slowed down masturbating but when I do I see the blood at the end of the urin..please give me your opinion!