late late late

Gi
My period is 37 days late. In the past, it has been notorious for being absent when I am stressed out but I'm a littttle worried about the idea of pregnancy. My next period (for October) is due to come next week so should I wait until then to see if I get it? 
I have been super emotional and getting big cysts on my face all month. 
Then again, the first day of classes my car broke down and it's the first month of the semester so who knows. 
HELP