Hello Penny, I am so sorry to hear about your husband. Also sending you a welcome hug.
This is all still very recent for you and I am not surprised that you feel the way you do. I am sure you are still struggling with the impact of the shock and the sudden change this terrible event has wrought in your life and you must be missing him so much. You do have a future, but it is probably too early for you to be able to see or envisage how you will be able to move forward from this yet, but move forward you will, in time.
All you can do for now is look after yourself and be thankful for the time you did have with him. I am sure he has left you with many precious memories and in the times ahead, these will help support you through your future; a treasure trove of wonderful days gone by. You will always miss him, I know, but you will carry your love for him in your heart always and he will still be there for you to hear in your head, when you need advice. You will know what he would have said.
There are things that help. I found keeping a daily record of how I was feeling and what I was thinking helpful. It helped get those feelings out of my system and helped me understand them better. I also put together an album of favorite photos and took walks in the park, where I could sit and try to come to terms with all that had happened and learn to accept it.
Talk to us here if it helps. You will always find someone who will understand what you are feeling and be able to offer some kind of helpful advice, or just emphathise.
Wishing you well.