anovulatory questions


who had experienced this? how do they work? I'm on a 28-30 average cycle and for the past 2 years, ovulated fine. last month my cycle was 35 days with a late o. this cycle I am on day 26 with no positive opk or temp shift (which I've always had) if I didn't o this month will I still get my period in 2 days? how do I know it's coming if my temp is still pre-o? thanks.