I have had all these same symptoms. Took me 3 months here in Canada to get in to see the surgeon just for him to tell me that I had a pulled muscle, he wrote a script for a drug that has high side effects and told me to come back in six weeks. since then I have been working at finding another solution. I have been to an Osteopath who has told me that my liver is hooked on the scar tissue. he has been working at manipulatiing the liver away from the scarring. After 4 treatments I finally have some relief. I am also following a fodmap diet from thr naturolpath staying away from food that cuases gas. The sad part is I have temporary relief, but not permanent