I do feel for you and your husband - you seem to have such a lot to cope with.
Taking loads of meds could also be the problem with the side effects they bring, but what else can you do? Have you looked at alternative methods?
As a sufferer i've tried loads of meds and treatments. needed meds to help with the pain, meds for the nausea. I was recommended a migraine cap from the Uk and I must say it has helped me enormously. It uses cold and darkness to ease the pain and gives relief to the head so much that the nausea feeling just goes so no more vomitting.
And its a one-off payment so it will probably last me a good few years. I'm even thinking of getting another one. I would recommend anyone giving it a go. I use it inbetween attacks as its so soothing. Your husband may find comfort from it.
I'm sure the company are still offering free postage to send from the Uk and the added bonus is a 60 day money back guarantee, which i haven't had to use.
The website address is www.migracap.com and you can also get it at www.worldwidehealthcenter.net