Alcohol free beer confusion and peth test! Help!

I May have made a mistake. Long story short im doing peth tests for my license.

I have been 285 days sier, 9.5 months. (This is not my Main account).

A few days ago i wanted to try alcoholfree beer. And it said 0.0% on it.

Now I found out that even though it says 0.0, the beer contains 0.5% alcohol…

Ive been drinking a lot of them lately as i thought it was 0.0% and i havent felt anything from it.

On friday it was 6, saturday 6. Sunday 4. Monday 0. Tuesday 6 and Wedensday 6.

I have a peth test next thursday so in 7 days. Am i totally screwed here?