If you tries to gaslight you, don't react in a hasty and angry manner...stay calm no matter what.

I would suggest that you go to the bank first thing Monday morning and ensure that whatever funds you have jointly are protected. This could mean you setting up your own accounts. You do not want to be responsible or any spending sprees he goes on. Do the same w/credit cards. If they are joint and there are balances, there is a way around getting them changed over to your name so that he does not charge even more on them. I'll be happy to share w/you how I did it.

You have to get through the next couple of days and then the emotionally coaster will start for you, but I promise you...you will be okay.

Sit quietly, the answers will reveal themselves when you least expect them to.
The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.