I am so very sorry for your loss. I would suggest finding as much community as you feel able, even if it is just wandering through the forums here, it will help keep you connected to social support.
I lost my dad and my ex husband both in 2007, two months apart. I found out about my dad in an email from my brother. It was like being kicked in the gut by a mule.
My ex was one of my dearest family and friends for 25 years. He was doing fine and then he was just gone. The only thing that gets me through is I love the beauty in the world. Even thought it has so much potential for grief. I know that my time here, however long it will be, is short. I know I will be with them again. I don't know how but I am so certain of it. I have had amazing dreams and visions of loved ones, both people and animals. I see it as a trip across an ocean where I can't follow in their tracks just yet, but my turn will come. In the meanwhile on good days I don't want to give up one minute of potential for some joy. I want to know more things. I want to paint and play ukes, love on my dog and watch the garden grow, read a good book on the couch, cook a good meal for friends, feel an ocean breeze in my hair. I work my ass off and it wears me down but it does some good in the world. I have lost so many friends and family I am just about the last of my family, but I know that most of them would not begrudge me whatever time I have left, and would tell me to make the most of what time I have here.
I would think your husband would want the same for you. One thing I would say that helped me is that I talked a lot to them after they left, as if they were still here, because they never left my heart. I still do. Not in a walking down the street talking to myself and people know I don't have a bluetooth stuck in my ear. Just in the car, around the house, in my head. I feel strongly we are more connected than most of us realize in life, and that death is a transition, not an ending. I also know that doesn't help when we want to hold someone we love and it isn't possible. But we can and do make it through, moment by moment.