Cortisone Acetate and muscle spasms

Had Cortisone shot for left shoulder osteoarthritis. Few hours later pain in left arm began. Next day was worse with excruciating pain in arm when arm muscles used even slightly. 48 hours later, pain subsided; but other side effets still present- hot flashes, increased appetitite, sore throat. One week later still having hot flashes, nausea, and now severe muscle spasms in left leg, muscle weakness and palpitations. Sore throat seems worse also- but no sign of cold symptoms.

I have recieved 3 shots in my neck.I keep getting bad hot flashes, I get real bad muscle spasms in my neck you can actually see my muscle jumping in my neck. in a three week period I gained 18 pounds due to increased appetite