Hello Amanda
Like your husband, I'm also on the Myeloma XI trial. I've just completed High Dose Therapy and Stem Cell Transplant and was discharged on 18th July. I must now wait until day 100 to see how well I've responded to treatment and whether I'm to be randomised for maintenance therapy.
As Eve has said, each patient's response to treatment will be somewhat different. Her guidance to take one day at a time is also very important. There will be low days but one thing I've learnt is that, subject to any side effects, you can carry on "living" whilst receiving treatment.
There is a wealth of information much of which is out of date, inaccurate and often depressing. I've found The Myeloma UK information to be far and away the most trustworthy. Their Infoguide on Myeloma XI should answer most of your questions. Feel free to contact me direct if you think I can help.
Your husband's journey has just started. Very best wishes to you both
Stephen