I am so relieved reading these messages. I thought I was going crazy alone by myself!!! I got my mirena in March 2009 and I was in love with it for a month. Shortly after around the end of April I started to feel crazy and go through these mood swings. I thought it was cause I have twin toddlers and im unemployed but the symptoms got progressively worse. Now its Oct my boyfriend is sick of me, the headaches and mood swings wont stop and I CANT sleep without Tylenol PMs. Im so excited that I have an answer now!!! Next step is trying to get it removed. Thank you ladies!!! Your voices have given me hope for mine and my family's future!!!