First, welcome to WHL.
Even though my husband is very supportive, in the beginning he didn't understand either. He thought, taking the meds will make it all better, that is what he actually said, " take your pills, honey, so you can get better".
I had to take his hope and smash it, I had to tell him, there is no cure, because when he said get better, he meant cured. I did explain all that right after I was diagnosed, but he did not understand. Maybe he was in denial.
Now he understands, but still gets on my butt, about taking my meds, because sometimes I forget. He knows how much worse I feel, when I slack off with my meds.
He is real upset for me right now, because I had to stop MTX, ( high liver enzynes), he is upset, because he knows it has really helped me with my pain.
I don't know, what your husbands problem is, but I hope he is just not ready to deal with the fact, that you are really ill.
Good luck to you.
I may have been dealt a bad hand, but at least I'm still playing with a full deck. ( most of the time anyway).