I am experiencing lower abdominal pain (side: right) and low back pain. and i went to the er but they did nothing for my pain ?

Some possibilities..: If one has very uncomfortable tummy pain, and is normally in good health, plus is not pregnant, the possibilities include: appendicitis (usually R lower quadrant), diverticulitis, kidney stone (very painful), constipation (crampy), stomach flu, etc... Most people with "moderate pain," more than mild pain, may need a doctor's re-evaluation to be sure it's not appendicitis, which would need surgery.