It will be some comfort that DH was in his 'happy place'...
The tumult of emotions that follow - the shock, the grief, and the dawning realisation that your life will never be quite the same again, can be overwhelming. Especially when there is so much practical stuff to deal with at the same time.
I hope you have the support you need from family - and friends. Take it, and allow yourself the space to grieve the while.
You are in my thoughts MOnica - frequently.