Can you have a regular cycle but not ovulate?

So confused.. my period comes right on time EVERY month. I get EWCM for roughly 5 days around the ‘estimated’ fertile window and test from the end of my period but I never get a positive opk (yes I keep testing even after the ‘window’). I barely even get a line.. how can I be so regular if ovulation isn’t occurring? I even tried digital tests this month and nothing.

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