hi. ive have sex with my girlfriend from time to time, usually unprotected. im pretty good at the "pull out method," however just the other day i had sex with her and i think i mightve ejaculated a little in her. ive read that the percent chance to conceive is around 20-25 percent (that should be with a full load of ejaculate, right?). so how big of a chance would it be if it was only a little bit?