Colic maybe?

I am literally going through the same thing right now. I've tried EVERYTHING I finally swaddled him and rocked him in the rocking chair and so far that has worked. My son is only one month too. If you find another method that works for your baby PLEASE let me know so I can try that next! I've only had one hour of sleep my son has been so fussy and crying since last night. Like I said, I got him to calm down finally but idk how long this will last, lol. I have no idea how I've managed to not stress out after only one hour of sleep, lol.

I hope your baby is ok. Check her temperature too. Good luck and if she doesn't stop I'd just take her to the ER.

Mmm well my baby hardly ever cries at all... try undressing her, perhaps the clothes may have a tag that's poking her. Perhaps she's too cold or too hot... maybe even just try skin to skin feeding. When my daughter got her 2 month shots is the only time she really cried and it scared me a lot. She was aching from the shots so she couldn't sleep well. And the more tired they are the more they fight their sleep sometimes. She found comfort when I undressed her to her diaper and gave her skin to skin and breastfed her.