No weight loss in 11 days

I had the sleeve surgery on May 20 and lost 12 lbs the first week.  I have not lost anymore weight the past 11 days - should I be concerned?

Nope, the first lose is usually fluid loss from what they pump into you during surgery. Then as you add in thicker foods you may not lose a lot or anything, but just keep at you surgeons plan and it will happen. Right now everything is going towards healing your body once you are healed you will lose easier.