I wish you and your husband all the best.
I don't know if you would be disfellowshipped. I'd say probably not, except if you told them that you had sex before marriage.
As others have said, you owe the elders no explanation at all.
It is natural, that you wanna make known to all, that you are happily married.
I am not sure if keeping it secret would be good for you.
One possibility would be to don't care about the others and stick to your husband. Then you would see who is your true friends. If a friend would end the friendship with you it is clearly not a true friend.
And if elders wanna counsel you, just say friendly that you thank them for their concern but that you are fine, and say NO NO NO to further talks about your life.
When you fade away the people in the congregation will have nearly no contact however they are permitted to talk with you. It would be good to make new friends who accept and love you as you are and who will not throw you away just because you change your views about religion.
On the long run it is such a wonderful thing to be free and live your own spirituality and live by your conscience.