I had gastric bypass surgery on 11/18. My pre-op weight was 252 and coming home from the hospital, I weighed 262 (I think because of all the Fluid build up). On my 10-day post op appointment, I weight 240. However, I am now 19 days post op and have lost nothing since my 10 day post op appointment. Is this normal? I'm following all of my surgeons instructions to the letter! It's so discouraging.