Hello, I used to have a burning sensation when I urine, but the doctor did a urine test and there was no infection. When i got home, my mother gave me an antibiotic 'Just incase.' Last night, just to make sure everything was ok, I masturbated to see if when I ejaculated, i would feel a burning sensation...unfortunatly I did. Is there something wrong going on here? I'm worried because i'm not sexually active, [18 yrs old] rarely masturbate [only once or twice before, but not to the point of ejaculation], and my girlfriend and I are quite touchy so if I have some infection i really dont want to pass it on to her.