With the extra protien of Atkins ou may be building lean mass. It could be a case that at around 150 you are at a healthy body fat percentage. That doesn't mean a percentage your happy with, but one that is considered healthy. To push it lower and to tone up trouble spots will take exercise.

Remember too that when you first lose weight it's not porportionate. As your body adjusts to a healthy weight it will start to become more even and not have spots that are small and some that still look chubby.

For those who have lost alot of weight there could also be the issue that it's not fat left, it's loose skin. At 10 pounds lost though you probably don't have an issue with excessive lose skin.

What you should do is find out your body fat percentage. For women 20-27% is a healthy percentage. You are probably alerady in the 20's. That will tell you how much lean mass you have and what a realistic goal weight would be.

Remember too that a number on the scale means little. You are the only one who will ever see it. Toning up and replacing fat with lean mass means becoming a smaller size, having a tone body, and firming up. That is what others will see.