A lot of people seem to have some regrets regards coming out, at least for a while, and usually at first. There is no "good time" to come out though - either you do and everyone in your circle will end up knowing somehow, or you don't.
Since you already have though there's no going back, you just have to move forward. If they are going to be negative about it, you're probably just going to have to deal with "microaggressions" as you call them. If it's more open hostility or you are put at physical risk, then I would take steps to stay as far away as possible from the people doing it, or get the law involved if there is real risk of physical harm. But you can't make people accept you or be nice to you, so to a certain degree you're stuck for now with some of those people I figure. You should concentrate on your own wellbeing and on ignoring them if they are trying to make you feel crap.
Like Dena said, I would never volunteer information to anyone I wasn't already mentally prepared for them to possibly use against me. That goes for any information, not just this sort. Because people in general aren't all that trustworthy.