Am I going to get fired? plz help!!

My consulting company is ripping me off, so to retaliate, i billed extra days on my timesheet, but i didnt actually work on those days. and the consulting company already paid me for those days.

today my consulting company told me that they called my manager,and my manager verfied i never worked on those days that i billed.

Now that my manager knows i lied on my timesheet, will i get fired?
more importantly, when i look for my next job, will the back ground check reveal that i got fired from my current job because i lied on my timesheet?