When will my period come??!!!

I'm 16 have have my period for about two years and it has somewhat regulated. My last period ended 38 days ago. I am sexually active and we use condoms; but he did go in a few times without one (not finishing/ or even coming close). I have recently went vegan and was wondering if that was maybe why my period had not come yet. I'm starting to really stress out so any advice or kind words are appreciated :)