My symptoms severe pelvic joint ligament pain-right side. low back pain bloating and increase in gas. please advise me?

Low back pain: Consider seronegative spondyloarthritis. There are several forms including enteropathic spondylitis or spondylitis associated with inflammatory bowel disease (including crohn's disease & ulcerative colitis) & forms caused by bacterial infections of the bowels including yersinia, salmonella, shigella, & campylobacter. See a rheumatologist to sort this out.