According to BMI numbers, you're overweight but not obese. You'd have to be down around 160 to be in the normal range. But, because of your medical condition, you really ought to consult with your doctor and perhaps with a nutritionist about what your own ideal weight might be.
People tend to get nervous if they see someone losing what they think is "too much." I'm currently overweight, too, for my height, but some friends still say things like that. They are the ones who have seen me lose. The people who haven't known me except at my current weight seem to just accept me as normal!
So, don't be too worried about what those people are saying. Go by your doctor's advice. Also, it is possible that you may not be able to lose below a certain level, even if your doctor thinks that would be ideal. You have done SO WELL by losing as much as you have!!! Don't let others spoil that for you!