Hiya
I have joined SW a few times and on the times I have come straight from doing WW I gained in my first week or stayed the same.
I remember once I also lost for 2 weeks and then gained the third, even though I stuck to it like the other weeks.
Hence why I have restarted a few times, the reason I come back is because I love SW and I do know that it works as I lost loads of weight years ago with it before I ever tried WW.
The problem is, that each time this has happened I have found it really hard to carry on and I also felt a bit silly, as I felt like people might think I wasn't telling the truth when I said I stuck to it.
I definatly think it does take a couple of weeks sometimes to adjust when you have been eating differently before.
I have just gone back again this week and I'm so worried about getting weighed on Thursday, I'm worried I might gain, but I'm more worried that if I do, I'll give up again.
I know it works, you just have to trust in it and carry on.
I'm glad you are looking at this as a fresh week and I'm sure if you stick with it, you'll see the results you deserve.
Good luck for this week x