Hello @mikesl, I would like to add my welcome to Connect along with @riflemanz64 and others. You mentioned that your doctor diagnosed you with diverticulitis. I thought you might find this article helpful that is very similar to the pain you are describing.

"The most common symptoms of diverticulitis are abdominal pain and fever. The abdominal pain of diverticulitis is usually lower and/or left-sided abdominal pain. The pain is usually sharp and constant, and the pain may seem to travel, or radiate, to the leg, groin, back, and side."
-- Diverticular Disease Expanded Version | ASCRS: https://fascrs.org/patients/diseases-and-conditions/a-z/diverticular-disease-expanded-version.

There is another discussion that you might find helpful where other members have shared their experience:
-- Diverticulitis: https://connect.mayoclinic.org/discussion/diverticulitis-1/

Have you discussed the pain with your doctor and possible treatments that might help?