So a few years ago I was taken to hospital for severe pain in my lower right abdomen, between my hip bone and my belly button. I also kept finding a lump that run from between my hip and belly button; it went downwards. I know that this is not a hernia, as I was checked for this a few years ago. This year I am having the same problem. It is causing a lot of pain and discomfort, but unfortunately painkillers do not work on me. Just knowing if this is a symptom of IBS caused by the hot weather would put my mind at ease. Thank you!