Coming out into the open about your sexuality is one of the hardest things in the world to do. The hardest thing to do is to accept within yourself that your gay.
The reactions of others is out of your control, as hard as it is for you to come out and openly express that your gay to loved ones family and friends, its also hard for them to accept this, so give them time, and remember your not alone, nor are you an outcast of any kind.....
Rome wasnt built in a day, as they say so dont expect people whom are not expecting this news to throw open arms out and congradulate you.
Normally they will come around, and if they dont, well hey at least you told them, and you let a weight off your shoulders, a burden you dont have to carry around.