AF now late, could I have ov'd late even with opks??

[WishfulX1]

Hi ladies, well af was due yesterday, been ttc for almost a year now and have my dates almost 100% to the minute! I use the cbfm and normally when I get a peak I have my af exactly 14days later, making my cycles 26-30 days. As I sometimes ov early in the cycle or later but my luteal phase never changes. Therefore going by all other cycles I am now officially 1 day late.

I had bad af cramps 4 days ago at 9dp0 and thought af was arriving early but they were gone by the next day and have not came back.

I tested yesterday morning with an eBay cheapy test and it was a BFN!

Is there still a chance I could be pg or more likely I ov'd later this month!

Thanks x