Every since my friend was murdered by her child's father I'm so on edge and nervous. My child's…

Every since my friend was murdered by her child's father I'm so on edge and nervous. My child's father has anger issues and today when I told him I was scared he would harm my daughter being angry at me he said, no need to worry about her it's you. Like wtf? Sounds like a threat to me so I sleep with my door locked now and he said like that will stop me from getting in if I wanted to