@Tra2419 I've managed to find a wedge cushion for the car, it was from a uk company but I'm sure you will be able to find something similar where you are. What I liked about my cushion is that I had the option of a deep or shallow wedge, I ended up choosing the shallow wedge as I didn't want to add too much height whilst in the car.
Hope you find something suitable soon.
Quick progress (or not) update
Yesterday was 2 weeks since I left hospital and much to my surprise I'm still sleeping downstairs in my makeshrift bedroom aka our dining room. However, I did manage to go up and downstairs once yesterday. Considering we've been living in this house for approx. 18 years, I'm amazed that I've never noticed before just how steep our stairs are and also how narrow the stair treads are. Going up was relatively easy ( I had my husband following behind me, just in case !) But going down was slightly more nerve wracking, and when I reached the last stair but one I realised the bannister stopped and I had nothing to hold on to for the last 2 steps - something else that never troubled me before ! This has made me realise that I need a lot more practise before I return to sleeping upstairs as I want to be really confident on my own.
I still haven't ventured outside for just a walk, and was planning to go out in the garden today but the thunder and lightning has put paid to that.
Today my leg all the way down to my foot has been feeling a bit odd, the best way to describe it would be that it feels a bit sleepy, or just a tiny bit numb, like I've been sleeping on it awkwardly, so I'm going to try elevation and ice to see if that helps before venturing upstairs again.