Hey Em, you ARE normal!
Everyone I know - including me - has done that.
Openly expected a certain weight loss in the first week, but secretly hoped for more and then had to be pleased with achieving what they said, but a bit disappointed it wasn't more!!
Complicated aren't we?
It's different for everyone and depends on so many factors including how much you've got to lose and what your eating pattern was before LL.
Also men lose more weight and more quickly generally than women . BAH!
On average you'll lose a stone a month,maybe a bit more at the start, and 1 stone equates to about 1 dress size.
You are doing fine.