Your body is going thru a big change.....get into a routine of tracking your food and be consistent with exercise. The routine is the important thing right after surgery.
When the time comes, the fills will help. Give your body a chance....don't get down. Remember, it's a long haul and a lifestyle change.
Stick with it....

I'm 5 weeks out of gastric by pass and my weight jumps up then down. My MD told me the more water I drink the better I will level off. He also said the amount of protein we by pass people need can affect elimination - and you can get really backed up. Drinking water will help the intestines do their job and keep it all flowing. Granted fluid can mean juice, milk or coffee, but the best for the body is plain water. He wants me to drink 60oz daily. That has been very hard to do, but when I have done it, I 've felt so much better .... and lighter. Hope that helps.

after the first couple of weeks your body will start to retain liquids and the sudden drop in pounds equals out to a steady drop. don't worry about a little bump in the scale every now and then. being *ahem* backed up is common, invest in colace and drink as much as you can handle. when you can tolerate solids, try to get in some fiber filled foods with your protein. I eat 1/4 cup of my home made (sugar free) granola on top of my greek yogurt for breakfast, or 1/4 cup or so of oatmeal with an egg. that has really helped me.

keep us updated on your progress!