Welcome Bev,
So sorry to hear about your husband. I hope you find some good advice and sympathy here. It is no wonder you are in shock and disbelief.
All you can do in such early days into your loss is try to look after yourself and give yourself time to absorb it. Don't forget to eat and drink/ Other than that, just do whatever helps.
We are here for as long as you need us. Sending you a hug..xx