Sorry to hear about your misscarriages too...it is so hard. I was put on progesterone suppositories early on and only had to take it for the first trimester...I guess the progesterone actually keeps the pregancy going, but then is not as important after the first three months....(please forgive my non-scientific descriptions!)

The reason I gained my weight back was because you are not supposed to do Atkins while you are pregnant, and I was put on bed rest, so I had not much else to do...of course I was worried the whole time so it was completely my own doing.....I am just happy to have my little girl and now I am working on me!

Good luck, I hated to go off Atkins, since it was so successful for me the first time, but it is worth it in the long run!
Ranger