As I understand it, the growling sounds your stomach makes doesn't always mean you're hungry. It can also be the digestive juices and gas in the stomach reacting when there's not a lot of food in your stomach, which in our case is a good thing. Your pouch can be full but your larger stomach mostly empty until the food passes through your pouch.
Don't ever eat if you don't feel hungry, especially just because your stomach is making noise. My Nut once told me to treat your growling stomach like a whining child...ignore it. Of course if you haven't eaten in 4 hours or more and your stomach is making noise, you may truly be hungry and it's calling for food. You'll know the difference based on when you ate last and if you feel hungry or not.
Lap Band surgery Nov. 2008, SW 335. Lost 116 lbs. LB removal May 2013 gained 53 lbs. Revisied to RNY October 14, 2013, new SW 275.