Hi, rhe epididymus is just the name of a tube in the scrotal area. Do you mean he was diagnosed with epididymitis? That's an inflammation of the tube.
Epididymitis is most often caused by a bacterial infection. Sometimes the infection that causes the problem can be one that is sexually transmitted, such as gonorrhea or chlamydia. Other times, the cause is never known. Some chronic cases can last six weeks.
Your husband should have been given information from his doctor about what this means in terms of sex with you. If you don't feel you can ask him, I'm thinking it's puzzling that you would be wanting to have sex with him, but if you are still having sex and he won't tell you if the doctor tested him for an STD or not, you might consider using condoms, and possibly getting tested for STDs yourself.
He had e coli bacteria in his urine.