I have this same problem, my inner-thigh flub, and under arm flub
Both are a lot more saggy now. Everyone tells me it will go away because I'm young, but I really don't think so. I was so big before, I don't think my body could ever snap back to it's normal size. I have learned to accept it though, as much as it SUCKS, I'd rather be a little floppy, than morbidly obese again!