What Causes Delay In Periods After Non Penetrative Sex?

Hi doc. Me and my boyfriend were dry humping. With clothes on. (He has his brief and short pants . I Had mu panties and shorts). And now I have delayed menstruation. Can it be the cause? Or maybe because I m just too stressed out thinking why I have delayed menstruation or it s because I m starting to ride my skateboard? Thank you so much.