I had a transplant four years ago. You didn't specify if it was an allogenic or autologous transplant because there is a huge difference between the two. I had an autologous transplant (where they give you back your own cells or marrow). I was in the hospital for a month and in my opinion it was probably harder on my family than on me. The first few weeks I was pretty out of it. Frankly, I preferred it that way, and the docs are pretty free with the drugs to keep you as comfortable as possible. I know for my family, it was really hard for them to see me so sick and doped up, and not a thing they could do about it. But, I turned the corner pretty quickly, and started to feel better. After the first few weeks, I started walking the halls the best I could, sometimes it takes a kick in the butt, but it is really important. At first it was one trip around the unit a day (and it was a small unit), and there were days when I just couldn't do it. When I got out, I continued walking as much as I could on a regular basis, and I do really think that helps with the recovery time. Within a couple of months I was up to a mile or two a day, and by the spring I was able to be in my brothers wedding, even after having radiation 3 months after the transplant.
If it is the allogenic transplant that is a completely different story, from what i have learned and seen, mainly due to the GVHD factor. I have a good friend who is 6 years out from her allo transplant, and she said the 1st year was hell for her, but she has since gotten her masters degree while working a full time job at children's services (40+hours workweek).
The biggest thing to remember is that every person is in a completely unique situation, from the type of cancer, to how their body reacts to different drugs, the type of treatment they receive, and their individual way of coping with a life threatening illness and treatment. In my opinion the biggest challenges for the patient and the family is the mental aspect, how you cope. Figuring out what you can control and what you can't, and having faith that in the end it will all work out the way it is supposed to.
I don't know if it is really possible to prepare for what you are about to go through, but joining some type of support group can be extremely helpful either on the internet or at some type of resource that is close to you.
I hope all goes well for you and your husband, and that this was somewhat helpful,
Stephen S.