I can understand your frustration. I had the exact same experience as well. I lost 9 pounds the first week of induction and then nothing the second week. In fact, I fluctuated up and down a pound through the whole second week.

Thankfully I took measurements -- I lost 12.5 inches in total.
So I really recommend doing that.... losing inches feels almost as good as losing weight :-) I bet you've lost inches.

I know from reading these boards that stalls are likely to happen... especially as the body adjusts to this new way of burning energy. You just have to trust that it's working and give it time. The weight lost will kick in again. Mine finally did yesterday.

You can also try making small adjustments to your eating. Try cutting out cheese. Or upping your carbs by a few grams for one day. Yesterday was the first day I went over 20 grams (23... and not on purpose) and voila! Today I was down 2 pounds. It seems like the key really is to make sure you're eating enough calories too.

Anyhow... best of luck to you.
Try to keep the resolve!