Disclaimer: Let me immediately acknowledge that I have no legitimate credentials for giving marital advice. But, I do have plenty of experience in both marriage and mattresses so here goes it:
It’s okay to go to bed angry.
You’ve probably heard that you shouldn’t do this, but I beg to differ. Late at night, when you’re tired and crabby, is not the optimal time for dealing with touchy subjects. It's hard to be reasonable and forgiving when you can't keep your eyes open.