Disgusting Loser Boyfriend !

So I had sex on cycle day 24, my period should be starting this weekend. It's cycle day 26 right now and my periods are from 38 to 30 days. I had sex with my boyfriend, we used a condom but I caught him with no condom on. He didn't ejaculate in me and I'm wondering what are my chances of possibly being pregnant ? Btw, I dumped him.