Applied to a job while employed, by the time the interview came my two-week notice was done. Should I disclose?

Hey there,

Sorry for errors, on phone. I applied for a job while I was still employed at my lost job. Due to the absolute shit show of a company I chose to give an appropriate notice even without something lined up. During my interview with a company my resume still had from time I got the job to present but I was not technically employed any more. I gave a two week notice because I honestly need a break and need to get my thoughts together but how do I deal with this situation. What if they do an employment verification? I should have mentioned it but didn’t. for reference my last day was last Friday, and the interview was yesterday (Wednesday). so not a long time at all between last day and background check.

help?