Most of these docotrs aren't specialists in weight loss, and a lot of them, especially men, don't get that for us women, it is often much harder to lose weight. They don't really want to admit to themselves that they don't know what to do.

If you can, get in tough with a nutritionist / wieghtloss doctor, one who has some experience with clients with physical problems. Try to stick with his or her program. Too many people go on old, outdated info on nutition (I still hear that potatoes are nothing but starch, which was thrown out about thiry years ago!) and excersize.
Good luck, dear. I hear the same thing from p.docs here in Sweden, until recently.
HUGGSSS