Rocky Mountain Mamma,
I felt a lot like you and only my Mom, husband and one close friend know about my surgery. I was not embarressed, but more afraid that people would wonder why more weight wasn't coming off, etc.
I am glad that I have kept my surgery private - no regrets, and really no temptation to tell anyone. When people ask what I have been doing to lose weight, I say that I decided to take care of myself, and started working out and eatting right. All true!
Good luck, and do what works for you!