How to get away without getting away.

My husband is mad at me right now, I really don't want to get into specifics. But we had an argument that ended with him calling me a bitch, and telling me to suck a dick before slamming his plate in the sink and going upstairs. I currently don't have a car, and know I shouldn't take his, but I really want to get out of the house and cool off. I'm 30 weeks pregnant and a SAHM so, I don't really have a lot of options as of right now, and I really don't want to talk to him when I'm this upset because I know I'll end up saying something I will regret later, just like he did. Do you ladies have a way of getting away without actually getting away? Thinking of going for a walk, but it's hot as hell outside and not sure if that would help or just frustrate me more.