I received my second fill last Wednesday. I felt absolutely no different until Saturday. I woke up on Saturday morning suddenly knowing what it felt like to have some restriction. My question is...why did it take 3 days after the doctor gave me a fill to tell the difference?

There is no such thing as a dumb question - except for the one that you don't ask. Having said that, I don't know why, but it does seem to be reasonably common for there to be a delay in feeling restriction after a fill. Perhaps it is because we go onto liquids and then mushies after a fill so it can be a few days before we feel it. But then, my band can feel tighter for no known reason at times.