It’s always hard to give an accurate possibility because there are so many different contributing factors like fertility, if she was ovulating at the time etc. but there is always a chance of falling pregnant whether you use contraception or not. The only way there would be no chance of your gf being pregnant was if you never had sex. But in my opinion, in your case, if there is a chance it’s probably low but don’t quote me on that
Thats exactly what i was thinking... Getting pregnant is not just about cumming inside the vagina... Many things are involved... Like ovulation, male fertility, female fertility....... As a medical practitioner pre cum does not contain sperms because of where its produced from being different from where the sperms are produced from...... But on earlier ejaculation encounters the pre cum can pick up left over semen in the urethra therefore it can make you pregnant but the rate is too low...... Chances of a woman getting pregnant in a month is around 20-25%.....and reduces with age thats if a man ejaculates in the vagina..... The chance is slightly higher during ovulation and the ovulation day depends of you cycle... You get the days of your cycle minus 14...then count 3 days before that days and 3 days after.... And you should not have sex within those days..... Out of the sperms produced not all are viable to make you pregnant.... Some are deformed, others flow out(some women have noticed cum flow out), others get "tired" and die on the way i the vagina, others may travel to the wrong fallopian tube and all this reduce the possibility of getting pregnant.... So before you freak out over pre cum first put all this into consideration.... But it takes only one sperm to make oone pregnant so precum can make you pregnant if you were in your fertile period...... Its lengthy but i hope its helpful... For grammar please forgive me am English is not my primary language