AF due tomorrow but my temp just spiked?

Leslie • 💙•SAHM• Boy mom•pcos•breastfeeding•💙

Update** pics in comments. My bbt is still up and one of my apps changed my O date 🥴😭. There’s no way I’m 3dpo, not with all this vomiting I’ve been doing.

This has never happened and it looks really weird. I’ve tried looking up why but I haven’t found anything yet.

Why did my temp spike like that??