Hello and welcome to HCM madam.. I am sorry to know the health Condition of your husband. Don t worry, it s common problem nowadays. Nothing severe. I read your question completely and have understood it well.. I being a surgeon, we come across many such cases.. Actually, as you said there might be a viral infection. You say the following things, and analysis to those 1. No vomiting, meaning 90 percent of the times you can rule out appendicitis. Also, appendicitis will have classical pain in the right lower abdomen. 2. Low grade fever and Abdominal Cramps. Sometimes, mild colitis will present with these symptoms. 3. He has diarrhea too.. Again this points out to features of GI, gastro intestinal infection. I suggest you these things.. 1. Make sure, he eats well. No spicy, smoked food. No non veg for few days, he can eat eggs. No alcohol. 2. Reduce, tea coffee if consuming. 3. Start oral antibiotics and few other medications and he should be perfectly alright. A. Tablet Pantoprazole 40 mg once a day, before breakfast for 10 days B. Tablet Orni O, Ornidazole and Ofloxacin. This will take care of infection. C. In case of severe pain, give him Tablet Buscopan 10mg. Hope this helps, give him lots of oral fluids. He should be fine. Take care and God bless. In case you need any further help please let me know..