Your husband no doubt loves you and wants you to feel good. So accept his good will, but you dont' have to listen to that bit!!!! Husbands always feel under pressure to "get it right" with the comments, so the pressure is to make you feel better, no matter what. Besides, they are from Mars and always have to "solve problems".
You feel bad. But it's not the end of the world - just get up and keep to the plan tomorrow. It won't make a massive difference if it's a once-off. The only thing that breaks is your peace of mind, not the diet, so don't worry too much - just decide you won't do that again and that's that!
We all have teething problems - and one of my biggest was also feeling like I was "wasting food" if it was not eaten. I could throw out a few vegies, but throwing out something "good" felt terrible. I've now learnt that the food I valued as "good" was really "not good" and the stuff I DIDN'T feel bad about throwing out is really the "good stuff". It's all a brain training game.
Luckily we have chooks and dogs, so between the two, I never truly feel too bad about "wasted food".