Drug testing

So the last time I did anything weed related was weeks ago! I do CBD for sleep and anxiety but it suppose to have no THC. I went in for a pre employment drug test and failed! I’m so embarrassed and so sad cause I wanted this so bad and didn’t even think I would fail considering it’s been weeks. I was thinking maybe the CBD I take messed with it? Do you think I can still get the job? The lady told me someone would call me in a few days and talk to me about what I’m taking then have to do another screening and then my start date could be 3 weeks from now instead of now. Does this sound promising like they might still hire me? Or should I just expect to not get the job? Really upset 😔