I recently started having sex with my ex girlfriend and 3 days after having sex, I started experiencing discomfort in the shaft of my penis (not burning) and some pre-cum like discharge. I have not been with anyone else and she has not either. She has had issues with bacterial infections throughout her life she says. I m 42 ans she s 27 so I m not sure if my prostate is acting up or if she may have given me a bacerial infection. I m wondering if this is simply that and not an STD. It has the same symptoms as an STD but slightly different. I started treating it with cranberry pills thinking it was a bladder infection and the symptoms stopped. As soon as I had sex with her again, it flared up again. What the hell is going on and I already know I should go to the Doctor.