Threw out my back - which is better: heat or ice?

I had terrible back spasms on Thursday, so bad that I had to go to the ER in an ambulance. I'm taking muscle relaxers, pain killers, anti-spasmatics and steroids. Right now I'm resting and laying on a heating pad, which makes me feel better. My roommate says I shouldn't be using heat but should be... show more I had terrible back spasms on Thursday, so bad that I had to go to the ER in an ambulance.

I'm taking muscle relaxers, pain killers, anti-spasmatics and steroids. Right now I'm resting and laying on a heating pad, which makes me feel better. My roommate says I shouldn't be using heat but should be icing it.

I'm seeing my regular doctor on Monday and have an MRI scheduled.

Until then what should I be doing? Should I try to do any stretching? Should I be using ice instead of the heating pad?
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