I had many of your symptoms, including gas all the time, bloating. I also developed a ton of body aches in just a 2 year period, which turned out to be arthritis through my whole body at 52. It was from malnutrition. My Dr's are trying to say it's chrohns disease...but I started to look into Celiac Disease , and the symptoms are the same.
This past week I have gone on a multi strain probiotic with a high cfu count...and have cut out sugar, and am working on gluten free diet. I am already starting to feel relief from the pain. Celiac runs in families, so it might help to look into if any relatives have it.
I'm not diagnosing you, just sharing from experience. My Dr is sending me an rx for an antinflammitory that has all these dangerous warnings. That motivated me to educate myself than get liver failure.
Peace to you, never give up, take care of yourself to your best to recover,.....there is always a pathway to the other side...education is the key, and hope. Love.