Short gasps

Hello. 
Our daughter Maya was born 10 days ago, and she had been doing really well (other than some difficulty breastfeeding, which I believe has been fairly normal). We've been alternating between breastfeeding and bottle feeding (pumped milk) while mommy heals. 
Over the last day or so, she has had shorter, raspier breathing, almost like little gasps. Tonight, after waking her to feed, they were more pronounced, and she was pretty stressed out while eating, continuing these gasps the whole time. She also didn't eat quite as much as usual, especially after a 4 hour break (50-60mL as opposed to 75-90mL). 
Wondering if anyone else has thoughts on this, or any experience? I plan to call the pediatrician tomorrow but it's 2am here, and it doesn't warrant an emergency room visit, as she is still eating and is actually sleeping again now. I'm just an anxious, worried new dad :/
Thanks!
Ben