I'm not surprised you're exhausted. Take a deep breathe and step back and relax. You're letting yourself be a tightly coiled spring and that is probably why the whole stubbed toe got out of hand.
What are you supposed to do about it? Nothing. If he needs fixing, he has to do it for himself. You can't work it out for him and fix it.
In a nutshell, you want to stay married, he isn't sure. He has to be sure, absolutely sure otherwise he's not going to be fully committed. So whilst he sorts his head out, you remain in the background, gaining personal strength and insight and let him come to you if and when he is ready. Let him see what he is missing. If you want to stand for your marriage then be the lighthouse.