Dam; I know what you are going through as I too have had S1 thru L3 fused as well. Of course, my surgery was done in a matter of a two level fusion the first time (S1 thru L4) and L4-L3 two years later. Then a revision cause the fusion didn't take. Plus one of my screws came loose so they did the anterior to fix it in 2004. Sucked, but my hubby came up with a real good idea. He decided that since we had a waterbed and you know how waterbeds are, that we would rent a hospital bed and I stayed in the living room for two weeks.
My son was 14 when I began this process and pretty much knew what mom was going through, but dealing with little ones is a tough one to handle. I think that retired gave you some wonderful advice, so I really don't have anything else to add to that. Just make sure you do every single thing the doctor advises.
hugs and good luck. I will pray for a good outcome for you.