What is going on with my 6 week old?

She sleeps great during the day, but once it’s time for bed she is awake and fussy. She will act like she’s hungry... again after just having a 2 oz bottle so we make her another ounce. She will fight with the bottle and get angry. Cry. Stretch out her legs and be fussy. I burp her. Nothing. I swaddle her. Nothing. She seems to only be content and finally fall asleep in my arms but I need to sleep too! What is the deal? It seems like she is crying and fussy for 3 hours straight. I don’t know what to do but I’m going crazy. 😞