My DD is 3 weeks old and is breastfed. And every morning, without fail, she throws up. Not spit up. Throws up. And she doesn't do it at all throughout the day. What could be causing this?? I feed her with her head elevated and I even hold her upright for about 20 minutes after feeding her...The thing I can think that MAY be causing it is once a night, my SO gives her a bottle of breastmilk instead of me BFing. He enjoys the quality time with her and it gives me some time to sleep. But why would that cause the throw up??
Should I be concerned?