Hi Yasmine. Don't panic hun. I was the same, getting down when I had low loss weeks but our bodies sometimes hit plateaux in whichever diet we do and, for me, that is often when we lose our resolve. Often, once the body gets over it, we have a good loss in the weeks afterwards.
Maybe if you were on another diet you would have sts or even gained - I know I would have - and 2lb is still a bag of sugar, have you held one lately, it is heavy!!!!! Hang in there hun coz you are doing so well.
x