Christy1980---go kick that doctor of yours in the pants.
You did not have the gallbladder issues due to weight--you had gallbladder issues due to heredity. I know because I run marathons and had no choice but to have my seriously diseased gallbadder removed last year...and I don't have the weight issues. And mine was so bad that I had I not had it removed, I would have died (it was diseased and had attached itself to my liver)...it was awful (and of course, it was so bad that I had surgery and wasn't able to have it removed laproscopically--figures!)....
So don't you dare kick yourself for that! You did your best with nursing and you gave it all you had--that is the best you can do. Don't get into the mindset that is self-defeating!
For what it's worth, I looked at your Christmas picture and you a very beautiful woman. There are lots of beautiful on-the-outside people who are worthless on the inside. Just remember that.
A research partner of mine had the surgery done (bypass) and she lost over 180 pounds and then went through (and is still going through) surgery to remove excess skin. She seems happy, but my concern for her would be how she eats now. Many things make her very ill and she can not enjoy anything larger than an ounce or two at a time, which meant that ate throughout all of our meetings (I only see her once a week, but it was the same every week).
I say let nature be your guide...maybe take some of the suggestions here that don't require surgery and forget willpower--that's a myth.
Little steps. After all, we don't gain it overnight, it won't come off that way.
For me, it's the wake up call that my kids need me and if I am not healthy enough to take care of them--no one else will! My health issues aren't serious, but I am a much older mom and that worries me every day.
Hang in there, I am sure that this is a difficult decision for you and I wish you the best in making the best decision for YOU.