He is pissed at me for wanting to keep myself and our daughter safe!

So I live in colorado and we are supposed to get a big storm tonight. My company is in the last week of the quarter so normally we could work from home in the event of a storm, but our director is strongly encouraging us to get to the office so that we can close the quarter out before the holiday. I live about 30 mins from work and my mom lives right down the street.

My mom has to watch my daughter while I work anyways, so I brought up to my fiance that I should just sleep there tonight to keep she and I safe and be able to get to work. He is flipping out and actually just called me saying we should just break up. He doesnt like me sleeping over places, but this is a safety thing.

He is saying he is going go drinking with his friend that is a girl who has feelings for him, when originally- I told him I'm not okay with that considering I have never even met her. I'm so mad right now.

(I'm sorry if this post is all over the place. I'm adding as we go).

What should I do?!?