Hello , me and my friend got intimate with each other. I rubbed her vaginal opening and outer area with precum on my fingers . During the whole act our privates never touched with each other's body. There was no penile penetration, nor did I pushed my finger in her vagina . She is Virgin.  Her period started last in 7th October, and bleeding continued for 5 days . We did the act on 6th day i.e., on 12th October. Her period is regular with 28 days .  What are the chances of pregnancy ?