If you felt like you could trust him again after such a short amount of time, we ALL would be worried for you. It would mean that you had turned your back on common sense and had decided to sweep the trauma, hurt, and betrayal under the rug and try to avoid dealing with it. And like an abscessing wound, that pile under the rug WOULD erupt at some point, causing you even more pain, as unlikely as that seems right now.
You have NO reason to trust right now. None. Nada. NOT trusting is the healthiest option for you right now. The one person who was always supposed to have your back, who was always supposed to be there for you, stabbed you in the back. For you to turn your back on him in trust right now would be crazy. You need to remember that your WH proved himself to be a liar and liars lie. Until he can prove to you, over months and possibly years of trustworthy behavior that he is worth trusting, you need to be careful and watchful. What you're feeling is completely normal and completely understandable. (((hugs)))