Why is my 5 week old eating then stopping, crying acting like she doesn't to drink her bottle…

Why is my 5 week old eating then stopping, crying acting like she doesn't to drink her bottle anymore then acts like she's starving 4 seconds later, drinks more then stops, has to burp, then repeats this. I've tried 4 different kinds of bottles. I feel like something is bothering her as she's swallowing the milk & has to stop. HELP!