You look great. And your doctor thinks you weight less than you do? Well, that right there is amazing, something I've never heard before nor any of my friends!
Bone structure & musculature have a huge amount to do with weight & appearance; and you are very lucky to have dense, sturdy bones. It makes a big difference in how you carry your weight, and why those old height-weight charts (even sometimes the current BMI formula) don't always reflect reality.
Enjoy it!