What are the chances

What are the chances that any sperm got into my body? On the last day of my period, my boyfriend and I had sex and he wore a condom the whole time. And he pulled out with the condom on before finishing. There was no apparent semen leaking from the condom and he said that it was good but I didn’t check. I know that he would t lie to me. Could I have still gottten sperm inside of me and the condom not broke or tear or leak?