Can I just add to the comments that have already been made? Don’t forget that you and your husband are at very different stages, not only in terms of the length of your disease, but also in terms of acceptance of your personal limitations.
I’m sure that you are both furiously angry that this buggeration of a curse has been laid on both of you, so do talk to each other about how it makes you feel (some men, even some people, find that more difficult than others of course). But also, you probably both need someone to talk to alone, someone with whom you can be honest and who’s feelings won’t be hurt by anything you or he has to say about the situation you’ve found yourselves in.
Don’t forget that your MS is going to be different to his. He may be one of the lucky people who get the right disease modifying drug (DMD) for him, and who is therefore going to remain more or less symptom free for a long time.
You’ve said you’re not on any treatment, do you have relapsing remitting MS? If so and you are experiencing relapses, perhaps it’s time for you to be on a DMD yourself. On the other hand, you may have a progressive form of MS, so that’s not possible.
Do try not to measure yourselves against each other. There’s a temptation to compare ourselves against one another. To feel aggrieved that X is less disabled than Y and so maybe they should be doing more within the family. Or that perhaps, because he gets a decent DMD and is able to stay relapse and disability free, he won’t understand just how it feels to be you.
I do feel for you as a family. It’s bad enough luck for one member of a couple to be struck by MS, but for both of you, it just seems utterly unfair. You have my sincere sympathy.