Like the others have said, most everything your doctor said makes sense except the lifting. Some here have been off all meds very quickly. Some have been on much longer, like your grandmother. It really depends on you, what exactly is wrong, and how much is being done. I hope you'll be off quickly, but I hope he'll continue to prescribe for you if you need it longer.
The lifting is a big issue. I was told nothing more than 5 pounds for the first several months. I'm sorry hubby is losing his job, but very glad he'll be around to help out with the little one. You're going to have to explain to her that mommy has a big boo-boo that hurts and she has to be gentle with you. Even small kids can understand that. You may need hubby to be present until she "gets" it, so she doesn't hurt you.
I did stairs from the start, even hauling my walker with me up and down. They'll teach you in the hospital. It's not that hard once you know the trick. (Most people won't go home with a walker, but some do.)
Good questions! Any more?
Hang in there. I know you're getting nervous, but keep the big picture in mind. It will be so worth it once this is all over!