I am 3 weeks post op and having some swelling still at the fusion in neck. Horrible muscle spasms. Ice or heat?? I have read so much different stuff. I don't want to do anything to make the fusion any less probable. I am spreading a type I diabetic. Was in fairly good shape not now. No exercise for four months. Taking oxy for pain and a majoruscle relaxer. Had level two c5/6. Thanks for the help.