I could try to tell you that you should be honest with your husband.. but really, I do the same thing with my wife. I will never tell her when things are so hard for me cuz her response makes it ten times worse and it takes away my coping mechanisms. So I would be the first to understand making up a story or lying to cover it up since I do the same thing.

I think the more important issue is that you have a plan and try to learn and act on some better coping techniques... like have a plan so that next time you feel like SI, there is another option.