Well, I'm sure your H personalizes it in a way that your dad never did because your HAS been the reason for your down moods at times. So it's perfectly natural for him to walk in, see that you are down and think, What did I do now??
Perhaps all that's needed is a little heads up from you..an email maybe..that says, I'm down today, just wanted you to know it's not you..I just need a little space.