good morning sir, im 21 years old and my gf is 17,around 5 days back at 4:30 pm my gf and i had an oral but we didnt penetrate,ie,i just inserted my finger in her vagina,the problem is she had her period date shortly and i had pre-ejaculate on my fingers 5 minutes back but wiped it off ( didnt wash my hand ), the next morning she had a contraceptive pill, and she still didnt get her period sir im quiet worried is she pregnant,if not wat can be the reason her period is getting delayed and when will it come ?