Hi ladies-looking for some help. I'm normally a 27/28 day cycle, I'm on CD 16. Been taking opk 2x a day since CD 9, no lh surge indicators. Glow says period due on 12/23, which is definitely longer than normal for me. So what's going on? Did I not ovulate this month? Could it still be coming ? Been trying to conceive for 5 months now but I've always had several + lh surges before this month.