I had unprotected intercourse the day before my fertile window, but he "pulled out". what are my pregnancy chances?

Contraception: Withdrawal method is associated with only 60% effectiveness..Pregnancy test is in order.And for purposes of contraception, other methods should be employed.

Hard to say: Withdrawal, as a pregnancy prevention measure, has a 70% chance of preventing pregnancy when used over the course of a year. Chances of pregnancy with any given cycle is 20-25%. It's impossible to say what your chances are for that specific instance. About 5 days before your period should arrive, take a home pregnancy test. If negative, repeat in 5-7 days. Consider reliable form birth control.