She might be eating too fast, after 5 min or so take her off and burp her, she might also be filling up with air, i know bottle feeding they say give em an ounce or 2 then burp them then after they burp continue feeding them. so maybe ucan try pulling her off and burping her every so often. Hopefully that will help. And it always looks like more when they spit up then they actually spit up in reality. As long as its not projectile or funky colored and she doesnt seem cranky i wouldnt be worried, joseph used to spit up like all the time and alot. jordynne was total opposite and never really spit up much.

I agree with Diane. She may be getting too much air, or getting too much too fast. Your milk may be coming in to quick for her and she's struggling to get it all down. Burping more often is great advice.
It always seems like they are spitting up a ton, but it's probably not as much as you think.

I work part time. When I get home from working a full day, my son immediately wants to feed. He feeds for a long time and takes in a lot. He just loves mommy much more than formula (got lazy with the pumping). He really spits up a lot for about a few hours after those heavy feeding sessions. I do a horrible time of stopping to burp him, horrible.

Also, during these times my milk is coming at him very fast because it usually has been at least four hours since I pumped last (I really got to be better!!).

Wow, you ladies are good with the advice. I actually just realized why my little one spits up.