I hope you can find that courage soon. I am sure you will get good support at GA and if you can tell your husband, he may find support both from the “families and Friends” part of this site and from GAMANON the associative programme to GA. The other positive in telling your husband is that he may be willing to take over your finances for a while which will take the pressure off you.
It is a very difficult decision to make though, and I would get as much support for yourself as you can before you go ahead. Telling your spouse is usually better than them finding out in some other way and if you keep putting it off there is more chance of that happening.
I hope you find your way with this and I wish you all the best in your recovery.