Could Fingering Vagina Cause Pregnancy?

Hello Doctor, Please Help me. This is killing me. Me and my Girlfriend was fooling around the other day. we touched my penis. I wiped the pre-cum with my finger of my penis. I then wiped on the blanket so my fingers were dry. I waited about 10 minutes later to finger her. which i shouldn't have done. Now I am really worried that she might get pregnant. Please help me