I can offer you my prayers, and tell you that having a loved one by your side is a tremendous blessing. I know, as I am blessed as your husband is with a loving wife. You may not realize how important that is to your husband, but sometimes just knowing you are there, even when he is grouchy, is an unbelievable blessing and comfort. We guys have a hard time showing we appreciate you sometimes, but we do. You are doing your husband tremendous good just by being there, and letting him know you ARE there.
Take it from someone who has been a grouch during trying times.