Hi, do chemical epididymitis go away it's own ? how can i know if it's chemical epididymitis or infection epididymitis ? how can i know if antibiotics working ?

Epididymitis?: This is your third (or more?) question. Taken together, it seems unlikely you have epididymitis. There is no such thing as "chemical" epididymitis. If i epididymitis, you'll know the antibiotic is working when pain and swelling improve. If no improvement after 3-4 days, the antibiotic isn't working -- probably because you have no infection. See a urologist. This forum can't help further. Good luck