I have four children, 6,4,2,and 11 months. I had the Mirena placed and feel it was the worst decision I have ever made. Since then, about 8 months ago, I have had pain in the back of my head, acne,severe back pain, mood swings, agitation, weight gain,several upper respiratory infections, and now I feel like I am pregnant. I get morning sickness and fatigue. I have not listed all of the symptoms, but several. I took a pregnancy test, in the middle of the day, and it showed negative. I was a little edgy-- I haven't had a period in 13 weeks. Thank you