If i cummed in my girlfriend's mouth while bj & then immediately kissed her then spat on her vagina and fingered her, will she get pregnant?

This scenario is not likely to lead to pregnancy if you didn't specifically place sperm in her vagina.

Agree with Dr. Fowler that pregnancy is unlikely. However, you behavior is putting you at risk of pregnancy and STDs. Use contraceptive all the time, every time. Visit this site for safe sex guidelines: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines Wish you good health!