as long as you're healthy it doesn't matter, BMI in itself doesn't say much about an individual. I had the same measurements like you when I started hrt, I weighed 120 lbs about 5'10. I did my best to gain as much weight as I could because I wanted more curves and 3 years later I'm at 140-143, couldn't be happier with my body now minus my pre-op status. I'm also a 32b. So it all just depends on what your goals are if you're happy at your current weight then all is well. I can't really say if hormones are doing their job for you or not, like how long have you been on hrt? It took about 2 years for fat redistribution to really set in for myself. I first saw changes in my thighs and butt. The thing is though, fat redistribution only works with new fat.