Chances are you are not pregnant from having a finger in your vagina. It's possible if he had fresh, wet semen on his finger, but that does not sound like the case here. Many things besides pregnancy can cause a late period.

Ok,
could also me not having my period is maybe because I have been under some stress could that be a possobility?

Stress can be a huge factor with some women's periods. Worrying about being pregnant can make your period come even later.

Thank you soo much :d