When you lose weight, your band will loosen as well. So maybe that is why you feel like you need a fill. That happened to me last time and after my fill I was "just right."
I thought that I needed another after 6 weeks (I lost about 11 pounds). But be careful to make sure that you really need a fill. I went in for another because I was 3-3.5 hours before I was hungry and I had .25 cc added. I was WAY too tight. I waited it out to see if it would get better for a few days. I ended up couging and vomiting in my sleep and not able to keep down water. Went to see my doc today and he took it ALL out. My entire 5.25 CC's were completely removed. He said that I was inflamed and it could be very dangerous. He needed to let the swelling go down. I cried the entire way there when he told me that I had to have it all removed. I have to now drink liquids for 2 days, then solids, and I go back next week to start refilling. I guess what I'm trying to say, is don't end up like me. Although, I did lose 9.5 pounds in less than 5 days, just not the right way. Good luck with everything.