Hello and welcome to minimins!
Please don't feel bad, I think sometimes when you see others losing big amounts in their first week it can feel like you haven't done well.
When I first started SW 10 years ago, I lost 2lb in my first week and then went on to lose 4.5 stones in 10 months!
2lb is a good loss- its shows that its working, and it can alos depend on what you were doing before - when I do WeightWatchers and than swich to SW, it takes my body a few weeks to adjust, but if you just stick with it, I'm sure will be glad you did!
Anyway, it can also take a bit to get used to which foods are speed foods and what works best for you.
Please don't feel disheartened, you are doing great!