Can’t be normal

I have a one month old the day coming hone from the hospital she choked on her spit and wasn’t breathing for a second the nurse helped us clear it out - fast forward to recently she’s been spit up a good amount of times after eating but those don’t phase her.

I’m not sure if reflux is causing this but this is 2 nights in a row now she lbs choked on something spit or milk or acid reflux idk but it’s silent she’s choking trying to get air and she starts turning blue. I’ve called her dr they tell me- burp after eating, keep upright for 30 mins after feeding and I’ve done all of that these “episodes” happen wayyyyy after feeding like 2-3 hours after

It’s so hard to sit here and watch her struggle to breath and turn colors

This can not be normal!!!

Any similar stories ?? Any help?