Oh God, did I hurt my baby???

I had her in the stroller and I was taking her from the house to the garage and I was trying to navigate the wheels not dropping down, but I had to lift the front part to put the front part of the wheels on another platform in the garage and the back wheels dropped and my baby was sleeping and it startled her awake and she looked shocked then started crying until I picked her up and she stopped pretty quick.

This is the drop

About 4”

She seems fine, but she’s never cried from being startled. I’m hoping she didn’t jostle her head and brain......

I’m really worried now.