Think I know what it is. I was sleeved in Aug 2010, and I had that mysterious burning. Sometimes I couldn't even button my jeans, because if it hit there....it had to go. I am a surgical nurse/assistant, and I found out it was ileoinguinal nerve pain. It's just a nerve that was probably hit by the trocar (port they use to enter your stomach) when piercing your abdomen. It goes away as the nerve heals.....it lasted on me for about a month. Don't fret....no reason to be concerned, more of a nuisance, really. Hope that helps!!!