Ive had a similar problem, Im also on prilosec, and even though I didnt think I had acid reflux either, the doc explained to me that it will in general reduce the amt of acid in my stomach so that food will go down easier and i will stop pb'n so much.
In addition, back in july i was overfilled, unfilled, overfilled again, etc etc, it happened about 4 times. I have a 10cc band, I had 5cc in it in july but felt i could handle a lil more restriction, they bumped me to 7 and thats where my problems started....to make a long story short, I only have 3cc in now, and for some reason, even thought I was fine at 5 at one point, I cannot even handle a .1cc more.....not really sure what my problem is, I havent been filled under fluro yet but I go back to see them again at the end of this month. And believe it or not even at 3cc I still pb alot more then I think I should be....
Anyhow, In all these months of the ups and downs (fill-wise) I had lost 14lbs in one week, then they'd take the fill out and Id gain 10 back in a month, then theyd fill me id lose 7 and gain it back when they unfilled me.....all n all I think ive been losing and relosing the same 10-15lbs since july, it is very frustrating, but the doc said its because im losing water-weight by dehydrating when I couldnt get stuff down and then when i could i would most likely be pb'n it back up....
so, I know it gets upsetting when we see the scale go up and not down......but dont fret too much, 1-4lbs is really not that bad when ur having some sort of complication.....it will come off Im sure of it.....
congrats on ur progress so far, keep up with the good work, and I hope everything runs smooth for u from now on
take care
~wendy