Am I being childish for sleeping on the couch

My husband and I got into a bad fight tonight. Well anyways we hardly talked and he just said “we’re fine, I don’t want to talk tonight though” so I just said okay well I’m gonna go sleep on the couch and give space and we can talk tomorrow.

He said we are fine and I should just lay down like an adult?

I personally feel more comfortable laying on the couch than I would next to him after a fight like we had and still having so much to talk about. Like I don’t want to cuddle and just pretend I’m not having massive amounts of anxiety and everything’s fine just cause he says “I’m sorry, we are fine, I want this relationship but I’m not talking tonight”.... . This doesn’t make me immature does it? I’m laying on the couch now debating. Before I came out here he got pissed saying I’m being immature by sleeping apart from him. I’m also 8 months pregnant so having a hard time deciphering real feeling vs hormones

If he would talk things out w me I’d sleep w him but I’m not comfortable doing that with brushing everything under the rug