5 week old will NOT stop eating.

My five week old has wanted to eat constantly for the past few days. Normally she eats 3-4 ounces every three hours but not she'll eat four  ounces and want more an hour later. She's bottle fed so I don't want to over feed her. I've tried the pacifier and she refuses. She's fussing almost constantly and won't sleep because she's hungry. I've swaddled, used white noise, tried swings, bouncers. I'm lost.