Hello dear I understand your concern Diverticulosis cause pain in abdomen mainly in left lower quadrant. It does not cause penis shaft pain Your symptoms could be due to urethritis, prostatitis, gonococcal & chlamydia infection, cystitis, stone in bladder, reactive arthritis (if associated with joint pain) I would suggest to consult urologist and undergo clinical examination, urine tests, tests for gonococcal and chlamydia, USG scan if needed Specific treatment depend on cause Tablet doxycyclin for 2 week treats most of infections UTI treated by septran DS, pyridium and syrup cital Meanwhile take tablet diclofenac or ibuprofen for pain Drink plenty of water and juice of cranberry, orange and pineapple Maintain proper pelvic hygiene Hope this may help you Contact HCM further if follow up needed Best regards Dr. Sagar