I have had a pain in my upper abdominal region on the last rib and below, left side and back for almost six months. I have numerous tests, cbc, rib xrays, lung xrays, ct scan, and everything is "normal". It is a dull ache during the day and a severe pain at night, waking me up. I cannot sleep anymore from the pain. I don;t have really any other symptoms except edema that recently started. Any advice?