Husband giving silent treatment over petty fight.

My husband of 12 years hasn't spoken to me since Sunday afternoon....today is Tuesday. He dosent work....so when I came home from work Monday I said hello and sat in living room with him till about ten....if I tried to talk to him he just sat there....no response. I told him that I feel like he treats me like I'm the enemy....not like he loves me and I'm his wife. I really truly love him....but I have never treated him the way he treats me. He is still in bed today on my only day off.....1:30pm....even though I know he is not asleep he is just avoiding me. what should I do?