Sperm leaked at base of condom. Chance of pregnancy?

So me and my gf had intercourse today and she was on top. While she was there, I ejaculated in her but using a condom. The condom was in tact and had no rips so that is not my concern. My concern is we continued for about another 1 minute and my erection slightly faded leading to a little bit of leakage I noticed on my pubic hair. She had an orgasm as well.

Some side notes:
- She is near the end of her period. She bled once more so far after this happened. So 8 days since her period started.
- My cum was extremely liquid this time. First time experience, normally, my cum is very thick and travels at a very slow pace but I flipped my condom (with cum, not all as I believe some had leaked at the base) and it flowed right into the toilet as if it was water.


My question is, what are the chances if my sperm had to travel down the condom, get exposed to air and then get rubbed only on the entrance of her vagina for her to get pregnant? I understand that there is always a chance when a situation like this arises. But I want an honest opinion about the chances of her being pregnant as opposed to not. Would you say 90% not/ 10% yes?

Thanks!