Emeraude, roughly the same thing happened to me back in 2001 after 30+ years married, and after I went to Fanfair despite my then-wife's fierce disapproval. The resulting upheaval was devastating and it took four years of counseling and trying to make it all work before we finally divorced in 2005. Along the way my three grown kids each took their own predictable stances: one called it too much information, one stopped speaking to me for a couple of years, and one bought me pretty scarves for Christmas. And by 2010 I had met, wooed and married my second wife, who loves the crossdress side of me and fully participates in both shopping and stepping out. My kids have all come around to be OK with me as I am, and I couldn't be happier.
I hope it all works out as well for you. Be true to yourself, and I believe that it will.