Need help 23 DPO, 8 days late.

[LoarBaby1915]

I'm doing my best to figure out what the h%** is going on this cycle, lol. I'm never this late and have a cycle of 28 days and 12 day LP. CD 14 I had intense cramps 2 hours after a positive opk and that's never happened. So I really feel like I ovulated that day or cd 15. I was due for my period August 5th but no signs ever came like cramps or breast tenderness on the sides or a drop in temp the day of or before, actually my temp kept rising. I tested last sunday making me 2 days late and BFN. I tested yesterday with a digital and got a error reading. My temp has stayed high and steady. I plan on testing again but just curious. I was wondering if anyone had their bbt keep rising after missed period? or seen a bbt chart like this ?