why are people so quick to tell you to stop loosing weight?

I think I'd see it as a weird sort of compliment ; ). It means you're succeeding in making a difference in yourself. Just smile with confidence and say you're happy with your results and progress. I'd love to be at the point where people were telling me I was losing too much! hee. So far everyone around me has been really supportive but I know that might change as I progress on my journey.

I've noticed over the years that quite a few people who lose quite a bit of weight and then keep it off go through a period where they look like they've lost too much and then they eventually stabilize at a better place. Dolly Parton looked like she was wasting away the first several months after she unveiled her weightloss years ago and then it all seemed to settle in and look great.

Yea they are not helping. You have made a decison to change your life and noone else but you can do that. You have done well so far and it sounds like you have made a lot of changes. Just smile and do what you need to do to improve your quality of life

I can understand how frustrating it is to hear something like that, but it could be (from some of them) that they're genuinely concerned. Watching someone lose a lot of weight, especially in a short period of time, is very strange. Imagine if any of your friends lost 1/3 of their body weight. No matter how much they weighed (or didn't weigh) to begin with, I'm sure you might think this is a drastic difference, and to you, they may look skinny! But everyone has their own goals, and it should always be about how you feel!
Others may be jealous and just trying to put you down, but in that case, just smile and brush it off! You know you've come a long way, and you still have a little further to go. It's none of their business what your numbers are, or what you want them to be. Firmly tell them that it's nice that they've noticed the change, and impress that you've made a goal and you're still working towards it!
If they keep bugging you tell them to butt out!

This is very true. I know I struggled at first with my husband's weight loss. First of all, his eating habits changed drastically. Our grocery bill dropped because he was eating less. I felt like a pig, because I'm 5'2" and he's 6'4" and I had eaten more than he did at a few meals. I was gaining as he was losing. Plus, he was skipping meals, so I really did have some cause for concern. I think I did ask him a few times how far he was going to take it.

Now that he's plateaued, I can see that he is still healthy and if he still wants to lose a few more pounds, he would still be healthy. However, when I saw him drop weight so fast, it was scary for me. Yes, I was jealous. I was also a bit worried, because he almost looked like a different person.

I also know from my own personal experience that when I was skinny, everyone and their mother had something to say about it. I actually didn't like compliments, because people were commenting on things I did not control. I ate everything in site, and I have never been active. I didn't gain weight until the last few years. When I was a teen, nothing I did could make me gain weight. I was on the lower side of healthy, but I was still pretty healthy.

Now that I'm 30lbs overweight... almost obese, no one says anything to me. Even if they did compliment me, it would be about something I have control over, such as my shoes, or the way my hair is styled. I love getting compliments about the way I present myself, but I hate getting any comment, good or bad about things that just come naturally. As I age, I am lightening up a bit about it, but when I was young, so many people were busy concentrating on my body and no one was listening to what I had to say.

Now that I'm heavy, I know darn well who is paying attention to me for my personality and intellect and who isn't. I don't mind that.

Ok, so I've rambled... The point is that when you make a drastic change, people notice and don't know how to act. It is also hard for people to not notice a skinny person. When you have both scenarios at once, it's annoying, but it just happens.

I don't give specific numbers anymore. I just tell people I'm aiming for a healthy body fat % and bmi.