Mommies, please help! It's 5 am. Since 10 pm I've been trying to get m…

Mommies, please help! It's 5 am. Since 10 pm I've been trying to get my daughter to sleep, but she can't. She wants to, but something is bothering her. She takes her fist/fingers into her mouth, thought she was hungry - fed her, but she throws up. And she has a sweaty forehead, we've never had that before. Please ?? anyone knows anything? I'm sitting and crying, looking at her and it hurts me ?