Domestic violence relationship help

Hi ladies, I’m in this awful relationship with 2 kids and one on the way and yes they are all his! I have plans on leaving I have everything ready to go on my day so! Well I crumpled the other week packing and said he could come back! Well things aren’t better as much has he likes to believe! I have literally 24 hrs to tell him to leave so I can pack and it’s the most scariest thing! I don’t want to be confronted with it again I don’t want to deal with the mental abuse he will put me under... I know I have to do this for the safety of my kids more so then me but having to do it alone and face it again I just have no idea how! I feel like a coward help please 😫