Congratulations!
Just a thought, but losing 45 since September is pretty fast, which may be why folks are concerned. But I wouldn't worry about it.
My 95 year old gramma thinks I'm anorexic at 140 pounds.
A few weeks ago I had a casual aquaintance ask me if I'd lost weight, and was it on purpose. Yes, on purpose, no I'm not sick. Sheesh people, I'm barely in the healthy range for my height and bone structure.
I really think, that as our nation as gotten fatter, our perception of a healthy weight is skewed.
I hug gramma and tell her I'm fine, and tell her what I weigh, the rest, I just blow them off.