Hi, The major cause on the right hand side of the abdomen is usually suspected to be appendicitis, but there are many other diseases which can cause it, for example: endometriosis urinary tract infections Pelvic inflammatory diseases aneurysms ovarian cysts ectopic pregnancy diverticulitis, etc the list is pretty long, but those were some of the main ones So without diagnosing the problem, all that can be done is to give you pain killers to reduce the pain. I recommend you schedule an appointment with an gynaecologist, since your previous doctors have already checked off intestinal problems or appendicitis as the reason for the pain, it seems highly likely to be a gynaecological problem. I hope this answered your question.