Hi there. I'm five foot 6 and currently wiegh 204 pounds. All the weight seems to be in my hips and tummy, nyeh.

but anyway, I have a few questions for those of you who have lost wieght, and if you could possibly answer any of these, I would be very thankful.
You see, this summer I decided to cut some calories and walk every evening, and I managed to lose nearly 20 pounds in about 3 months.

thankfully I have kept it all off! But, I can't seem to lose more and I guess I'm sort of stuck. I'm thinking about joining weight watchers, but since I generally eat healthier now, is it right for me?
I have a few other questions... about after I've lost more wieght. I've heard that my shoe size could go down with my wieght. Does anyone know if there is any truth behind this? I have wide feet, so I'm wondering if they'd get a bit thinner.
My chest isn't exactly small, and is it going to go through some damage if I lose more wieght? I hate to ask but I'm a bit worried about that, too. Not just of the size, but could my chest get saggy if I lose wieght?
Thank you to anyone who can help me!