Welcome to HCM I have read and understood your query Hope it may help The gas pain you are experiencing is due to diverticulitis and associated constipation.Though you may be right if antibiotic also doesnot make you feel good. As you are already taking plenty of fluids,it is good and maintain it.Along it take more of the fibers in your diet.Eat more fruits and vegetables.Avoid all gas producing foods like grams broccolli peas beans and legumes.do a regular exercise.Take One glass of luke warm milk twice a day with one spoon of ispaghol husk in it.See if you can find Trimebutine in pharmacy.It also help to reduce gas production if taken once daily before breakfast.If not available try Esomeprazole 20 mg once daily before breakfast.It also helps colon. I will be happy to know if it was helpful.You can approach us anytime with another query Regards Dr Faeza Sherdil