Where are my keywords in serps?

Hi all,

I own a new website since about two months. It's a slow process so at the moment only writing some articles and plan for backlink in the next two months.

i keep track of my keywords with serpbook, and since a week every one of them (througout the week) dissappeared from the top 200. I can't find a manual penalty, the links are still indexed in google. Is it just the waiting game?
maybe 3 links build to the homepage so that's certainly not the problem.

thanks!