What if he does know that you thinking that and that’s why he is withdrawn worrying that you are contemplating something? I don’t think you should discuss divorce per se. It might not be a good idea.

But you two need to discuss that you aren’t happy and maybe he isn’t either (maybe because you aren’t putting up with stuff).

Asking him what HE thinks needs to happen to improve your marriage might provide some insight to what’s the deal with him? Why is he fighting over insignificant things like hairbrush. Is he thinking your marriage doesn’t need improving? I don’t think you should be suffering and crying in silence. You are married. You have rights to share how you feel and what’s bothering you. Unless you don’t feel safe to do so, then it’s understandable but it’s worrisome

I hope you two can discuss it and get on the same page