My last period was on 10/14 - 10/16. I'm on nuvaring and have periods every 28 days. The app shows my next period is scheduled for 11/17. Is this correct? It seems like it should be 11/10. I didn't take my ring out last Sunday. Am I still protected if it's in an extra week? Also my acne is pretty bad, I'm having headaches, and cried this morning over something silly. These are my pmsing symptoms.