OOOh you need to do a search on this! There are a number of us who have very slow loss - I lost nothing for 3 weeks, lost 4lb the next then nothing since, and to cap it all off, my op or rather post-op has given me serious side effects which effect me. It is all very dependent on each individual - your hormones, metabolism, height, weight, perpensity for loss etc etc and it may well be that it will come in fits and spurts. Don't be down hearted - it WILL happen!