I too had horrible cramping until I start a low dose pill form birth control (ortho tri cyclen lo). (Depo Provera did evil evil things to my body).

Ever since I was a teenager, the pain would consistently be on the 7-9 scale. For years I suffered through the agony and nausea and emotional havoc which affected me so much I would often have to miss school, leave work, and call in sick. Nothing did the trick.. heating pads, loads of otc pain relievers, herbs, exercise, etc.

With the form of BC I am on now, the pain is very manageable w/o treatment and often non-existent (0-3). The longer I have been on my prescription, the more manageable and less existent my symptoms have been. This is a solution you may want to try out.