Wondering if there are any negative effects to masturbation while being sick. I hear it could be a cause of lower immunity levels, is that true?

I'm really stressed out because I've been getting recurring urinary tract infections coupled with yeast infections for the last six months. I'm not sexually active and I've been to two urologists and a gynecologist — they've all given me medication but the problems always turn up again. Is one problem causing the other? Can these prolonged problems be doing serious damage to my body? Perhaps you can't answer my questions either, but I'm really at my wit's end. What do I do? I'm tired of doctors and embarrassing exams and I can't understand why this is happening if I'm not having sex. Also, I'm a senior and in five weeks I'm out of health insurance — extending my parent's policy is very expensive and not an option. I'm busy trying to set up interviews, finish a thesis, and do a million things — I don't have time to be running around to more doctors' appointments! What insurance options are there for recent graduates?

I think I may have some kind of urinary tract infection. It came on very suddenly, about three nights ago. And when I pee, there is a burning sensation when my bladder has almost emptied. It's not an STD because I'm in a monogamous relationship, and yes, I'm sure! Please help. Thank you.

I went crazy and started masturbating more than usual in the shower and then when I got out my foreskin was swelled up. Should I see a doctor?

About six months ago, I experienced pain when urinating after having intercourse. Typically, I have pain/burning the first time I urinate after sex, but then the pain tends to go away or diminish. I am a 38-year-old male. I have no pain otherwise.