Hi, I'm 20 years old, and I was recently diagnosed with epididymitis most likely due to an E.Coli infection (because I'm still a virgin). I'm wondering what could cause it because I took 7 days of ciproflaxxin, but it came back a week later. However, I have done "anal masturbation" (using a sex toy (dildo) for anal stimulation). I did this (anal masturbation) a few times over the course of a year, then got epididymitis for the first time, took the medicine, symptoms went away, then did anal masturbation one time, and it came back . Urine test was negative, meaning everything was fine there and got an ultrasound of my testicles and that was fine too, along with a cat scan ruling out kidney stones. So two doctors think it is epididymitis, which I do too, I'm just wondering if anal masturbation can cause epididymitis, and if so, is there any way to get it to stop causing it?