Weird BBT chart- what is going on!?

Jessica

I usually have super regular cycles and bbt goes up after ovulation and a positive OPK. Different apps are able to find my ovulation and I have crosshairs. Not this time! This cycle I get my positive OPK, my temp gradually goes up but then it’s fallen again! Ovulation not detected! Chart is very ugly. Am I out? Do I have an issue with ovulation suddenly? Also cramping btw which makes me think I can’t still be fertile…