well in some cases it does mean losing friends. i lost friends, a job - women in the workplace feel very threatened when all of a sudden other women are getting noticed. on the one hand it was a blessing in disguise. i got to start fresh elsewhere; not so much to "hide" the fact that i had surgery, but just a fresh start. new people who werent use to the old you and arent threatened by the new you; sometimes helps you settle into your new life a bit better. it depends on the individual though.
it is definitely YOUR CHOICE when, where, and if you ever tell people. dont feel pressured to answer questions until you are ready to do it. stay strong, hang in there