Flat spot?

Lynn 🤪

So my baby has a flat spot right in the middle of the back of her head. I’m not even really sure how it happened because She doesn’t use a swing or bouncer but she spends a lot of time on the floor and sleeps for 12 hours a night. Although when she’s on the floor and asleep she’s typically moving her head around looking at stuff and sleeping it’s usually turned to the side 🤷‍♀️ I’m not really sure what to do about it. Anyone else have a flat spot? It’s not extremely noticeable but I can feel it.