I have somewhat similar issues. I am having pain mostly on my left side. It drives me out of bed in the mornings. I have the same problem with turning over at night. I have to do it slowly and sleep on my back for a while. I thought it was my kidneys or my back but no tests show any thing. I had hip X-ray, abdominal CT, and blood work done. Gyn showed nothing abnormal. All shows nothing. I am sure it is gastric related. I was taking omeprezal for GERD issues before all this started. Stopped that, but I am wondering if the med caused some gut bacteria imbalance. I take probiotics every day and have for years but it’s not helping. I have been taking Lactulose which does seem to help some. I am perplexed that my doc says it is not my liver ( cirrhosis) causing this. Luckily my day is usually pain free. Just nights of tossing and turning and pain in the morning making it difficult to get out of bed even. Once I move around, urinate, move some gas, things improve. There is definitely something wrong and I am not sure why tests don’t give any indication of what it is?? Going to try the Mayo diet to see if that helps. No red meat at present and careful to consume mostly fruits and vegetables. I think maybe the four to six small meals may help. Not losing any weight though. I will follow this thread to see what you all discover.