Could The Delayed Periods Be Due To Polycystic Ovaries?

hello. I am 25yrz old n i have pcod for d last 6yrz. It was evident only on ultrasound reports with polycystic ovaries. Howevr,my menstrual cycle has been related to my stress levels i guess. I had taken deviry 10mg off n on. I had my lmp 7th july. Got d strip test negative n took 5days deviry course 10days back but stil not menstruated. No doubts i have been under huge mental stress n bad health 4 d last 2months. But nw m tensed again. Plez help.