Sounds like you are facing a lot of challenges right now.
The Scope website has a section specifically aimed at those that have recently acquired a disability:
Also you might like to check out this organisation who are specialists in supporting people who have had amputations:
You can find me at:
Jean Merrilees BSc MRCOT
You can read more of my posts at: https://community.scope.org.uk/categories/ask-an-occupational-therapist
Warmest best wishes to you,