can eat sugar/fat w/out getting sick, feel like my pouch is gone, always hungry

I had RNY in 8/2006, did great, lost 150 lbs, now I feel like I'm starving all the time, and I can eat suger, and ever get sick like I used too...I mean lots of sugar.  I am up about 10-12 lbs.   struggle with cravings, and tired all the time.  Do you think I ruined my pouch?  does anyone know if there is a surgery to fix this problem again?  I still run/exercise a few times a week, work (RN) running my butt off all day long, but still putting back the fat on...I can feel my cells filling back up!
[email protected] is the best place to contact me!

Scared,
Marci