he went absolutely crazy, pulling me around the room by my hair.
This hit me more than any of your other words. Sweetie, this man is an abuser and an addict. It may be hard but the best place you and your baby can be right now is away from him.
It may hurt now and in days to come, but one day it won't hurt so much and your life will have new beginnings. Staying with a man like this will hurt every single day, because the good days are an illusion and the bad ones will get worse.
Take a read around here and you will see many who have been where you are. Read the sticky posts at the top and maybe something there will help you find the courage you will need to start a new life.
I am so sorry you are hurting and glad you found us, you are among friends here.
Hugs