You might be at a good size for your frame. Some people set there goal by jean size and how they feel. I know a girl that is your height and 150lbs., but you would never guess it because she looks fine. She has a large frame , so she can carry more weight and looks less than she is. When I reach size 4/6 again I think I will stop no matter what the scale says. I look at my size 4/6 jeans that I used to wear and I can't believe how tiny they look! When I was that size people always told me how skinny I was, but I didn't think so until now when I can look back at my "tiny" clothes. Can't wait to see your pic!
