TTC PP and weird cycle?

Heidi • Boy Mama 💙💙💙 09/23/2019 • 10/22/2021 • 11/30/2023

My LO is 15mo and my husband and I are trying for #2. I got my period back Dec 7 and glow predicted fertile window week of Christmas. I'm so bad about taking early FRERs (I'm supposedly like 9dpo) and today I decided to throw in an opk, and the opk was positive. I'm so confused. We BDed to cover the bases but I'm so confused. Any advice?