I have diverticulitis. I'm experiencing severe pain in my abdomen, vomiting can only hold down liquids and my vomit smells like fecal matter. Back and forth between diarrhea and constipation, blood in my stool, black stool and sometimes throw up from my nose, mouth, and diarrhea at the same time. Should I go back to a specialist. I've only been prescribed one med, told to take fiber, restricted diet so forth. It's getting worse