Does gambling 1 day before my 341 meeting hurt my chapter 7??? Any advice is welcome

So yesterday I made a very crazy and stupid decision to go and gamble out of pure urge. I took out $4200 in my personal money from the ATM. However I did not gamble the money away. I just kept it in my purse and came home with the money in my hand.

I have my 341 meeting tomorrow @3pm. Would the trustee find out about it and refuse my chapter 7 BK discharge? Should I let my attorney know about it?