My baby is three weeks old. Last night she gagged on her spit up to the point where she couldn't breathe and turned red/, purple. I had to turn her over, pat and suction her mouth. It was terrifying. She has a doctor's appointment in a week but has anyone experienced this? It's the third time and I'm not sure if it's acid reflux, her formula, etc. Also, she has a lot of spit in general and her mouth always sounds congested. ( I suction her nose, it's clear.) Please help!