I have a short two months of work experience that I didn't put it on the resume. (I was fired due to unhappiness with the boss; I've been thinking for resigning at that time but didn't do it and at the end I was fired. I am so regret for this. )
Now I got an offer from a top consulting firm, should I tell them the two months' experience on background check? Should I put this experience in background check sheet? How can I explain it well? Will they rescind the offer because I didn't put it on the resume or because I got fired.
I will have a four months gap in my experience if I don't mention this to them.