Crazy ex

I been going through a lot recently I started dating this new guy he’s not good at all he makes me feel like shit and treats me badly for a long time I didn’t know how to leave till today I was dealing with something I told him I didn’t want to come over today that I need it time to myself he got mad about it because I said that same stuff yesterday I kepted saying the next day but I was sure Monday I was going to feel better I’m in my period plus I dealing with family issues which he didn’t know, I tried to talk to him about it he told me to suck it up that everybody goes through stuff, I asked him if he wanted me to come tomorrow he said no I said okay bye then he tells me he going to kill me I blocked him I’m not sure on rather or not to tell parents cause honestly I know they’re blame me and tell me I have to deal with it since I been acting grown which I haven’t. But I’m worried my ex might do something to me I’m to scared to call the police or tell anybody else.