T is 4 weeks old today. We are combo feeding on the breast and supplementing 6ish bottles of pumped milk a day after breastfeeding. She spits up very little when being burped, it's been only a few times. When she is full she usually claps her jaw. But over the weekend M was bottle feeding her and while eating she threw up everywhere. She does not always burp after each feeding. She sleeps in a Rock & Play that has an incline, and sometimes sleeps with a bink. Recently I have found myself being worried if she threw up while sleeping. I'm not sure what to do and feeling anxious. Even though she is right by the bed I don't want her to choke and not hear her. Thoughts?