You need to leave and you need to do it ASAP. But as someone else above said, don't be rash, think through what you need in terms of documentation, assets, finances etc.
Do you have any relatives of your mums where you can go and who you can trust to support you? What about your dad's side of the family? Think through where you can go to either hide from your ex or which family member will support you during this difficult time, without turning their back on you.
Take your nikah-nama, property papers, degrees, diplomas, proof of abuse and any money/cash/jewellery that was given to you. You need the money to support yourself and odds are once you leave the house, you will not be given what is your right.
I hope you are ok. Please get your kids and your mother and leave. I hope you are safe and in the mercy of Allah swt. May He keep you and your family safe from this psycho!