Hello, A Couple Of Weeks Ago I Was Diagnosed With

Hello, a couple of weeks ago I was diagnosed with diverticulitis...I had a terrible pain in upper left side. They did CT scan and found it. Gave me antibiotics and went home. Finished the medicine but the diarrhea has reappeared, I feel nauseated a lot, and I have a bad aftertaste in my mouth, fatigue, and feel as though my body is being pulled out of quick sand.