coughing while breastfeeding???

so I've been producing large amount of milk and I have a premie baby so it's a lot for her, I pump before I feed her as the lactation specialist told me to do, but the past day while I'm feeding her, following all her instructions on how to do it, she's been coughing while eating, like she swallowed wrong and I can't get a hold of my lactation specialist or my home nurse because it's the weekend, anyone go through this?? advice on how to prevent it? it's easy to get her to stop coughing, I burp her and sometimes she will spit up a tiny bit but it's nothing that seems serious, just scares me a little