Do you believe that sperm is still present in the penis after previous ejaculation? I have heard that is true..

For example: Me & my husband had sex, he pulled out and ejaculated, then a few hours later we have sex again for the second time and he pulls out again. I’ve been off birth control for 2 years, and we have been using the pull out method for 2 years as well.

We’re not trying but not preventing. Just curious as to what my pregnancy chances are. We would be happy either way.