Has anyone got experience with diclofenac use over longer periods of time?

Has anyone got experience with diclofenac use over longer periods of time? I have a nasty prostate infection and got prescribed a heavy dose of antibiotics and anti inflammatory drugs. Couple of days in, I got terrible stomach issues including vomiting and the runs. Back to the doctor I went, and he suggested I swap the anti inflammatory meds to rectal route to lay off the stomach for a bit. The idea is to take 1 supp twice daily for a week to reduce pain and fever. Anyone else used diclofenac up the bum? And what was your experience like?