Thanks for your query.Based on the facts that you have posted it appears that you had unprotected non vaginal sex with your girl friend.
Though you did not have vaginal sex you had put your fingers in her vagina.Since your fingers were contaminated with semen and if her menstrual cycle is regular, possibility of pregnancy
can not be ruled out.
Please wait for one more week and if she does not get her period have a urine test for pregnancy done to rule out remote possibility of pregnancy .
Consult qualified Gynaecologist for examination and further treatment.