Any experience? Child Head Injury

I feel like a BAD mom.

I tripped with my 11 month old. I landed on my knees (to keep my weight off him) but couldn't stop from dropping him from my arms he hit the back of his head with a loud THUMP on the tile. He cried SO LOUD and was a bit limp but after calmed down was okay.

I rushed him to ER he was all giggles and still is 4 hours later.

Will he REALLY be okay?

They didn't to a CAT scan or anything.

Just basically gave him a physical.

Please give me some reassurance my baby is okay. I still want to cry. I feel like the worst mom on earth.

Posted anonymous because I'm so ashamed.