You have had an amazing weight loss, well done. Nearly 2 stone in 5 weeks can't be bad. I have a ball in 5 weeks and can only dream of 2 stone off (though that would be perfect).
The first time I did CD, I lost 6 stone and started exercising, but found that it didn't come off any quicker and if anything slowed it down a bit. However, the shape of my body improved and the inches went down and that is what counts.