I had my IUD inserted December 17, 2005. Today is March 9, 2006 and I've had sore breast (similar to the breastfeeding), NO sex drive, I've gained 6 pounds, have constant bleeding and my tummy looks like I'm about 4 months pregnant. My Dr. says it's all in my head and none of these are side effects of the IUD. After finding this site, I'm glad to know that she's wrong. I will have my thyroid checked, but I think that this thing has got to go. Thank you for sharing.