I last had sex outside on my relationship probably 15 months or more ago. I have never had any symptoms of an STD; no painful urination, no discharges, nothing. Then three weeks ago I developed a dull ache in my left testicle and lower abdomen. I haven't had much discomfort in the last five days, but that's probably just the large amounts of Advil I've been taking. I suspect I have epididyitis. Can it possibly be caused by an STD? Even now I have no painful urination, no discharges, no increase in frequency.
The woman I strayed with was 38 at the time and I was 42. I want to get checked out but am terrified of what I'll be told.