I'm still fine-tuning the coming out process in my own life, but I feel like I botched it with some of the earliest people I told. I was open first with close loved ones and health care professionals. It didn't occur to me that anyone would be disgusted or angry, but some of them were. I'm more careful to scout people out now, to get a feel for their beliefs and inclinations about gender and sexuality.
But then there have been a couple people I kind of just blurted it out to, having gotten so fed up with playacting as a girl.
I don't know what you should do. If you do tell anybody who doesn't like it, don't take it personally or try to change them. Sometimes they'll come around with time. I've agonized too much about how to explain that I'm the same person, that being who I am makes me happy, etc.