Maysie
Congratulations on the award. Well done.
You have some time to decide what you want to do with your award, being housebound myself I understand your frustration at not being able to go out. You don't have to commit to a Mobility car, most areas have volunteer taxis for transport to your GP or hospital, you can take taxis for other trips and hiring a car for a week is not as expensive as you might think, so there are alternatives.
The only thing I would recommend is that when you do feel up to going out then do so. Take small steps, no pun intended and grab little victories where you can.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems