Baby bald spot?

I showed it to my pediatrician a month ago and she said it was perfectly normal but it has gotten bigger...

Anyone’s baby have a bald spot like this? How long til it grew back?

She is almost 3 months old and has been sleeping through the night since 9 weeks old, hence the bald spot 😭😂

EDIT: thanks for the responses everyone! I feel much better. I added a second picture to show how it looks from the front 🥰