Whether prompt, please, it is possible to become pregnant at the very first sexual certificate or act...

[Evgenie]

Whether prompt, please, it is possible to become pregnant at the very first sexual certificate or act if to not use a condom? To me of 18 years. And more tell or say in what days at women probability to become pregnant the most minimal? How them to count? And whether in general there are such days?
Thankful in advance!

[Soboleva L.I.]

Hello, Evgenie! At the first sexual certificate or act chance to become pregnant same, as well as at all subsequent. As to " Safe days " - come into conference "Contraception", look or see " Questions and answers " at a subject of Natural contraception. There I not time described a way of calculation of safe days.