Actually I think 2lbs may be about right since you were already losing weight beforehand so dont have much water weight to lose, so you're not going to get a big first week loss the way others have done. I've had weeks of low losses too, the weight will come off at it's own rate I've learned, no point stressing about it, if you're 100% it will come off and there's not much more you can do to influence that other than maybe drink a bit more water and do a bit of gentle exercise. Also, if you've had a cold that can affect your losses too, your body works differently when it's not well, it may be that instead of using it's energy to burn fat, it's using it to fight the cold.