Is there a possibility of pregnancy with pull out with a condom and no other form of birth control

So there is this new guy that when I went to EMT school with that I didn’t expect us to actually like each other more than friends and my ex husband had an affair while we were married and had a kid so for the first time in 3 yrs I actually had sex and yet I haven’t been back on birth control since 2022 and yet the only protection was a condom and pull out method. Is there a chance of pregnancy that could happen?

Is it wrong for me to actually be smiling and feel happy again after everything that I’ve been through in 4 years of being married to a narcissistic person who had to be in control over everything in our marriage?