Can My Girlfriend Get Pregnant Because I Might Have Introduced

Can my girlfriend get pregnant because I might have introduced my fingers inside her vagina with little to no pre seminal fluid? She was supposed to have her period this last friday the 11th be it didn't came. on the 5, 6 and 7 of the present month we were playing with each other. I masturbated her, I introduced my fingers into her vagina, I dont remember if my fingers had pre seminal fluid on them and if they did, the quantity would be very low. I remember my fingers been dry when i introduced them into her vagina. I must say that my girlfriend still a virgin. Can she get pregnant because of this?