I had my Mirena placed on July 18,2007. Instantly, I gained 20 lb...

I had my Mirena placed on July 18,2007. Instantly, I gained 20 lbs and was back at the weight I was when my daughter was born on May 2, 2007. My breast size has increased drastically. They were already large but know the size is so unbearable that I wear three sport bras at once for support because my regular underwire bra's hurt. My back hurts now. I get cramping often, and bled for three weeks so I'm not sure when my next period is due. I get really dizzy at times.I already have a history of postpartum depression but I feel so much worse. I can't stand the anxiety I feel....my medication doesn't seem to be covering the attacks which they did before. I'm not sure what to do. My therapist suggested getting the other IUD.