Screaming baby

The past two nights my 3 week old will be nursing then just start screaming and crying. I’ll take her off burp her and she will still be screaming, we got her gas drops to see if that was the problem and it’s still happening. Yesterday she was up from 10pm to 3 am having these bouts of screaming no matter when I did. She was fine all day today and was her normal self. She woke up at about 1 am and started screaming again. I’ve changed her diaper, swaddled, rocked, and tried to nurse her and nothing helps. 😩😭