Lower abdominal pain, no right side, been to dr. several times, no answer yet?

I've had a sonogram, CT scan, pelvic exam. Pelvic came back normal, as did CT scan. Sonogram showed several small cysts which dr. says shouldn't be causing pain. Stool samples came back negative. Went to an internal specialist, who says blood work shows an inflammation. Next step is MRI. Any ideas? I'm scared.