Newborn throwing up

My daughter has been throwing up since we were in the hospital. The nurses were a little condescending and started talking to me about how to burp a baby. This is not my first. I know how to burp a baby. I feel like my concern was not taken seriously and it wasn’t until discharge that they changed her to a sensitive formula. Now, instead of throwing up during every feeding, she is throwing up maybe once a day. Still concerning, and we have been in contact with her doctor about it. We took a picture of what it looks like, because it’s not the regular newborn spit up and plan on showing it to the doctor at her next visit. She’s only a week old, so her system is still new. Did anyone else experience throw up that looks like this with a newborn?