Wth is wrong with me!?

I am ready to scream. I was 100% convinced I ovulated on 11/22 according to my bbt, cm, positive opk, and the nausea and sore boobs and super sensitive nipples that followed. Well at 4dpo and my temp plummeted. I didn’t freak out tho because a single weird temp is no big. This morning at 5dpo it went even lower. I ended up taking another opk out of curiosity and it was positive this morning. (Not a strong positive like I got on 11/22 when the test was darker than the control, the lines were about equal.) Also the soreness in my boobs and nausea has pretty much vanished. So I am just at a loss.