Me and my friend got intimate. Her period started on 7th October and the act was done on 6th day of cycle i.e. on 12 th October . Her period cycle is of 28 days. I rubbed some precum from my fingers on the vaginal opening , there was no penetration of any kind in her vagina and out private parts never touched each other. What are the chances of pregnancy in this case. (She is virgin. )