What is considered projectile? Is it force or amount? Once or twice a day DD will burp up what looks like a half an ounce or so but it's not forceful and she doesn't bat an eye. It's always immediately after coming off the breast - could it be overfeed? I'm constantly worrying about AR, but she's having plenty of soiled diapers and gaining about an oz a day so I have tried not to obsess.
Re: Q about projectile vomiting
projectile is force.
Try not to worry about AR. If she's gaining and doesn't seem in pain, I wouldn't worry about it.
My DD would vomit about 5 to 6 feet across the room. I considered that projectile. She was also very colicky/upset about it and got an AR diagnosis.
My DS seems to be more of a happy spitter. . . he spits up (a lot sometimes), but never seems in pain.