Firat OPK and cycle odd??

[KJM2013]

I've been tracking my days and doing basic OPK for a few months. 28 day-ish cycle and mid month smiley face.
Upgraded to the fancier clear blue with flashing and static faces and I've peaked on day 19 much later than previous month's tests have suggested.
Now on day 30 with no sign of AF. Have been crampy and windy, as I usually am preAF but no spotting. I normally get a couple of days before actual bleed.
Any thoughts?

An average luteal phase is 14 days so if you ovulated on cd19 then you’re not actually due AF for another 3 days yet.