I think the back pain is from laying flat on your back for 2 hours during surgery. Try a heating pad - I love my heating pad. 6 weeks out and I still use it now and then. It was also good for the tummy and shoulder for the gas. Gasx is good.

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231/153/150
Banded 12/11/06
First fill 1/25/07 - 2cc - 209 lbs
7th fill 3/18/08 .5 total 8cc - 165