How To Treat Penile Pain?

i am a 43 yr. old man, for two months i've had pain in my left groin area. i have been on 3 different types of antibiotics and steroids along with a couple of cortizone shots, and am still having pain. I have been to 2 doctors and a dermitoligist, because of a reaction i had from some of the meds...my penis is raw, i had an ultra sound and everything looks clear, except on my left hemiscrotum: it says its slightly asymmetric increased fluid, epididymis slightly more hypoechoic, epididymal head 8.1 x 20.1 mm, probably compatible with low grade inflammatory changes.. there is a left epididymal head 1x2 mm cyst, could this be causeing the pain and how serious is this matter and what should i do about it...thank you.