Taking in air

M
Girls- 
When I bf my daughter it seems like I can hat her gulping air and I can feel it get into her belly. I notice that she nurses for a while but then gets uncomfortable and pushes off of my breast. I burp her and then we can continue. Any tips on how to stop this? I think we latch pretty good, he mouth is wide open my boob is sandwiched. I move her to my breast.... Any other thoughts or suggestions?? I hate being the cause of her gas or discomfort.