Hi Chantelle,
I'm so sorry that the Diversity Dept. guy let this out of the bag. I wonder if you should politely and unemotionally discuss with HR or the Diversity Dept. why people now seem to know about your condition. I might add that you came out for the good of the office -- trying to be honest and helpful with them. In a sense, perhaps the fact that this "outing" jeapardizes your livelihood -- or perhaps not. I don't know whether people who work for the government are in as much danger from losing jobs as in the private sector.
When I came out, I told the people in my immediate department and, surprise, surprise. Everyone within the company and companies we worked with quickly found out about my TS status. My former ex, with some daggers aimed my way, said, "See, there's NOTHING that's going to travel faster through the company than some kinky story about sex. I, of course, didn't consider what I was doing kinky -- unfortunately, though, pandering television shows love showing the kinky side of ->-bleeped-<-. I presume it's a real crowd pleaser.
Anyway, rest assured, it's something we all go through whether we like it or not. Maybe in a few decades, society will get bored with us and find something else to gossip about around the water cooler.
So, for now, try to relax. I think the worst is over. And, as some said before, be calm and proud of what you are. If you get angry, it'll just give them amunition -- they can accuse you of being unbusinesslike.
Good luck and think peaceful thoughts.
Hugs, Teri