I managed to get Epididymitis after a fall whilst showering?

Good afternoon. I managed to get Epididymitis after a fall whilst showering. 2 days ago. I did a short work shift afterwards in absolute agony. My question is how long would it be wise to remain at home resting until it is safe to return to work? I work in a commercial kitchen as a kitchen porter, and some degree of heavy lifting, as well as a large amount of walking around is required. My pain is still present, and severe today, with pain relief barely helping, and my next work shift is tomorrow morning. What should I do?