Welcome to Psych Central! I'm so sorry to hear about your losses. Anger and keeping busy are two normal ways men handle grief. That said, you might need some breaks from your husband. At least try to get out from home some--to a mall to shop or to just sit and rest, to the movies, etc.
Men don't tend to want to talk about their grief or write about their grief like women do. How about you checking out a counselor? Going to see one does not mean that someone is emotionally imbalanced or whatever. And often "regular" people do not know how to listen to someone who is grieving and wants to talk or they even say the wrong things.