Well it was her thyriod. Good news is was inflamation that comes from pregnancy. I had this after my secound child and my wieght had dropped to 113 lbs. I guess she just had it a bit worse as she had gotten down to 106. Usually it self corrects after nine months. Her baby is eight months old. Her latest test are back to normal and she should start gaining wieght and feel better. My mother also had this after giving birth to me. So a family thing. They will have to check her once a year as Graves Disease does run in our family. Sooner of course if she has any problems. Some of her extra wieght loss could be from the surgery to remove a cyst the size of a lemon from her ovary. Some how they missed when they removed the larger cyst from her other ovary several months ago. Just as well because she was pregnant during that surgery and we are just thankful that we have our wonderful baby.