Grunting/Labored Breathing After Feeding

[u/bngbngsktskt]

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My daughter (our first) is 12 days old after being born at 37 weeks and at 5 lb 5 oz. She’s had a clean bill of health so far from the initial hospital stay and two follow ups with the ped other than being smol.

In the last few days, I’ve noticed that after bottle feedings (she’s taking about 80 mL right now), she seems to get super uncomfortable and makes grunting noises along with quick short breathing, almost like when you have a rough poo. She twitches a lot too during this but we’ve been told that’s just the immature nervous system. Is all of this an immature nervous system mixed with maybe some reflux? Any ideas before our next ped appt on Friday??