When I pee urinate I have a severe pain/burn sensation coming from the tip of my penis. a little info on the issue. I just got back from the pacific ocean, swam in public hot tub, had sex in ocean aswell. I shave my pubic hair. been with same woman for 3 years, unprotected sex, she is on IUD. left beach Friday. on sunday morning I did my morning pee and it stung a little. I didn t think nothing of it, as I thought maybe cum was left in night before. Now its Thursday and the sting has turned into a severe pain. I also have 2 very small open blisters on shaft of penis. Ive been to 2 doctors. urine coulture has not came back. I test negative for all STD S, . as of now I am taking UTI prescription medicine for 4 days and no good results with it. the doctors think the blisters are a staph infection and the don t know why it hurts to pee. its getting worse every day.