I'm glad you made the decision to tell your supervisor, and I'm pleased it worked out so well.
As for your husband - only you know what the best approach is there
I put off telling the people that I loved too - part of that was fear, and shame - but part of it was not wanting to cross *that* line just yet. I knew when I told people I'd 'have' to quit.
Looking back, I'm glad I did tho - I found an almost instant release, and my life has gotten immeasurably better since the day I did.
It's something to think about anyway
D