Methylpred DP and lower abdomen

Being weaned from Methylpred, for the third time in 1 1/2 yrs. VERY bad side effects from losing weight, to siezures, thin skin,lots of bruising, mood swings, depression, anxiety, shaking. Now that I have been decreased once more, from 42mg daily, to 12 mg, my stomach is enlarging by the day! My body and face are thin, (size 4) however, my waist is now 35" and my lower abdomen is 39". I am totally uncomfortable. I work out daily, watch my caloric intake, but each day my clothes get tighter. Any ideas? Is this normal. Can I hope to get my flat stomach? I was placed on mega doses of steroids, when it was rhought I had Polymyositis. Had leg biopsy---inconclusive, however, steroids seemed to lower CPK numbers after several months. Now Neurologist believes steroids are causing numbers to raise, and weaken my muscles. Yuck! Thanks for any help JN