I feel absolutely terrible...

Before you judge me just know I absolutely feel terrible. My baby girl rolled off the bed two days ago. I turned around for a split second to grab a diaper and she just rolled over into the floor. Our bed is on the ground so she didn't fall far. It's just ill never forget that loud thud. I know she smacked her head on the hardwood floor. Then followed by the worst screams you could ever here. When I was able to calm her down she went back to playing and being a happy girl. She didn't have any marks or bruising or any swollen areas. She's been eating and sleeping really good. Poor girl is teething, pulling at her ears and just overall fussy in general. I know this happens to all babies, but is she going to be okay? I feel like an absolute terrible mom and wonder if she knows that im so sorry and that I didn't mean for her to fall.