My menstrual cycle has changed from coming regularly every 26 days to every 28 days starting in May of this year, 29 days in June and now to 32 days this month. My period this month was 4 days late but it arrived yesterday making this cycle 32 days. I am 35.5 years old have been trying to conceive for the past 2 years. I want to know what could be causing this change with my cycle ex. start of menopause, cancer, pregnant?