Af showed but temps rising?

MrsK

Sorry if this is a silly question but can’t seem to find an answer. My temp dropped for 4 days and af showed up, but temps never dropped below coverline. And now my temp has risen the last 3 days (well above my normal now) Super confused, is this just a fluke. I’m definitely still on my period so can’t be pregnant, right?

And here is what it looks like when I merge the charts