I'm about 5 weeks post op. Happily I've shedded 30 lbs since surgery, but it seems that now that I'm able to add a more selective variety of food, (fish, chicken protein drinks, some veg) I have not lost a pound in over a week. Is this normal? Yes, I have incorporated walking and my tread climber. Also I have a hard time going to the bathroom. Any suggestions? Help!