I respect that you truly felt sad..i'm sorry about that and I hope you feel better!!!!
But i am suggesting you are bringing some of that sadness towards yourself without anybody doing anything to you except letting you be you.
How is sitting there as yourself with your boyfriend closeted? You do not know how your uncle felt at all. Nobody is doing anything to you
You have a family that seems to love and accept you as you. ..Your transition is still very raw.. you are still immersed in the differences, the unfairness, the details..etc....nobody else is...isnt' that actually ok??
On xmas, My brother in law got everybody gathered in the kitchen on xmas and told some droopy long story about his thankfulness about his new lease on life blah blah.... you should've heard the crickets when he was done.
