Pouch diet and then gaining weight?

Even thought I'm only four months out, I did the pouch test diet two weeks ago. I lost four lbs the first day ( thought of it as water) and then gained back two lbs the next days (water still?)
but since then I've gained a pound, and then lost it again and not gotten back to the orignal four pound lost. WTF?
My eating is better under control which is the good thing, but why am I stalling now??

Hang in there!
I hear we all experience these stalls that can drive us crazy. Just keep following the rules, protein first, no liquids 30 minutes before or after eating and move your body. Dont forget the vits. I know some say to keep your carbs below 40g a day to help too.
Dont despair, it will pick up again.