When I had mine (some years ago) I was really quite fit beforehand (although not, I think, to the level that you are describing). I don't want your thread to be unanswered though, so this will bump until someone better comes along.
I was given a booklet of exercises - have you got that? I did that (religiously) and the walking (increasing distance and speed determinedly).
My issue was that I had keyhole, so I had only tiny scars and healed really well, so it was quite hard to remember that the cuts on the inside were not quite as tiny and neat. Perilously easy to over-do it (and pay for it).
Who is stopping you making the bed? I think I was doing that kind of thing by about 3 weeks - there's a really good list of yes and no on the Hysterectomy Association website, but I was big on doing what was right for me, and listening to my body - rather than being a stubborn arse and pushing on through the pain (which is what I would normally have done).
Having said all that - I was amazed by how I was still feeling it for a long time after. I remember deciding I would hill walk about 10 weeks post op and then being utterly enraged by how little breath I could find. I think that's the effects of the GA as much as anything though.
Ironically even that post-op state is a level of fitness I can only dream of now - getting quite nostalgic thinking about it!