About 2 weeks ago I noticed that my scrotum was red but thought nothing of it. Today, my right
testicle is slightly
swollen, not painful or tender. I think I might have tender lymph nodes in my groin. I had a vesectomy in May last year. My question is, could the oral or other physical contact given me an std that has casued epidymitis? My testicles are not sore, its just that the right one now looks bigger than the left, my scrotum is a bit red (at times, this seems to come and go).