There are a lot of factors that go into your body's appearance. Sometimes, it will take several days of good behavior before I notice a difference. Once, there was a noticable change in less than one day (which still puzzles me).
I once read that it takes three days to make up for one day of binging or eating more than you should. Of course, that statement was in relation to a fad diet, so I doubt that it's scientifically accurate.
Honestly, I just try to keep doing well and I trust that my body will eventually continue to improve. If I focus too much on how my body is progressing (or not progressing), it's just too easy to get discouraged and quit altogether.
Anyway, sorry I don't have any more information to offer. Maybe someone else can be of more help.
"Act as if it were impossible to fail." - Dorothea Brande