What will bounced check show on your bank statement?

My old landlord wrote me a rental deposit refund check and I deposited it and got 100 dollars right away. And I didn’t think that there could be anything wrong with it so I spent some of that 100 dollars. Today when I checked my statement I am overdrawn for the amount I spent from the 100 dollars and the amount of the check became a debit on my statement. I am wondering if that means the check had bounced? I can’t make personal phone calls at work so I can’t call the bank right now but I really want to know what could have happened. If the check did bounce, am I going to be charged an overdraft fee?