I was wondering if someone could help me understand this some more. I know they say you can get it other ways then sex but my timing just don't make sense.. I had protected sex no oral sex just protected vaginal sex.. 10 days later started to get pelvic and groin pain.. my left testicle is huge with a knot in it with a lot of pain.. So I went to ER than did an ultrasound and told me I have Epididymitis. Only way I think I could have got this is from my 1 time encounter protected sex.. does this have to be from chlamydia or could it have came from something else?? Than didn't run test they just treated me.. the bad thing is I had sex with my girlfriend so if it is from chlamydia she needs to know and get treated to, but that's just going to open up a can off worms