I have diverticular disease and last night in severe pain and still some today i don't want to keep going to er . any suggestions?

Call GI: Chronic issues like you have are much better managed outside the er. You need to discuss your ongoing pain with your gastroenterologist.

See a doctor: Review your hospital er records with your doctor. Diverticulosis usually is not painful, but constipation can be. If there is infected diverticulitis you should be on antibiotics & see your doctor too. I do not know what your medical records or findings have been. Need a doctor to review your reports for proper direction.