Are you getting enough protein? You should probably be eating more lean meats rather than pasta. The dietician I've been seeing has said to stay away from breads, rice & pasta. I'm 4 months post-op - haven't had any bread, pasta or rice and I've only had one fill so far. I've lost 42 pounds so far....
Also, are you getting any form of exercise in to your daily routine? That could help jump start your metobolism too.