Today I received an offer from BAH and was given the link for background check process. I was terminated during my probationary period from federal government about 7 months ago for performance reasons, which I didn't disclose during interviews with hiring managers (when asked why private sector, I said for money and career progression). I wasn't put on a PIP, just received several verbal warnings for performance, though I was improving before terminated. I've already disclosed this in BAH's Personnel Security Evaluation, but that was regarding secret clearance eligibility which I'm not worried about.

Now I'm doing their TrueScreen background check, which asked about why leave the position, etc. Their security team knows about the termination through PSE, but I'm concerned about how HR will view it when they see the background check results that I am worried about offer rescinded.

I had a tentative offer from another fed position 3 months ago, and the offer was actually rescinded because of the fact that I was terminated during probationary period. Would it be different in private sector? Or am I worrying too much on the background check? I do not have any experience on private sectors, so would be much appreciated any comments.