4 month sleep regression- nightmare!

Jenny • 35• married• 1 fur baby🐶• 1 human baby 👶

Bedtime has been a complete nightmare the past week. I figured the sleep regression just meant less sleep and more waking up in the middle of the night. My baby is a totally different baby at night. She screams at the top of her lungs when trying to feed her and put her to bed. She screams like she's in pain and it shakes me to my core. She eventually lets me nurse her after 30-45 minutes of this. Is there some other underlying issue or is this all part of the "regression"? I'm fucking losing my mind.