I was feeding my 5 week old last night and she usually finishes her 3 ounces. Well last night she ate 2 ounces and wouldn't eat anymore. She used to guzzle her bottles down and now she isn't. She won't finish them and this started last night before bed. Like yesterday she didn't seem hungry. My husband says she is fine. Why are we going backwards and she is only eating 2 ounces. Should I be worried? I think she is gassy but when I fed her 2 ounces and tried to feed her more she spit up quite a bit. Is something wrong with her? she doesn't have a fever I checked and she went right back to sleep once she was done spitting up.