OMG! I fed her a bottle today! Well... most of one. But hooray!

She is a VERY windy baby and she stopped about 40 mils into a 58 mil feed not because she is out of energy but because she won't suck when she has wind pain. But the nurses said she is also the most difficult child to burp and they've not been able to figure out how to get the gas out of her. She won't burp, just farts an hour or so later. Any ideas? I hope it isn't my BM, that would suck . What causes super bad wind?