What to do? Do I stay or leave? Or take sometime apart?

I’m thinking on if I should stay with my boyfriend of almost 2 years or leave him.
We had a disagreement where we were making out and I had to leave and he asked for heads and i said no and it got a little out of hand where he yelled and looked like he was going to hit me but he didn’t and said he’ll get me back.
It scared so bad when I was going to sleep I pictured him attacking me.
It’s the first time this happened and I won’t want to stay for another time when it might get worse. And I told him I need some time to think on the situation, he asked me what is there to think about I didn’t answer him completely cause I was still shaken.

What do I do?