first, congrats on starting a new life for yourself.
second, I feel 180* different about it, maybe because I'm a man, but I've been telling all my co-workers all about what's comming up in a month, all of them are very happy for me and are impressed that I am finally going to take this "weight" issue by the horns and whip it's ass.
Personally, I don't think there is anything to be embarrased about, everyone can see we're fat so it's not like they will be shocked by finding out we're doing something about it.
Just my $.02 worth.
good luck with your procedure