I have had the Mirena for 2 years now. The first year was fine, ...

I have had the Mirena for 2 years now. The first year was fine, I did not have a period or anything. However, now in the 2nd year I have started having a period every 21 days that last for 7 days, it is so heavy that I bleed through a super tampon. The doctor did not tell me that I would lose my sex drive, sex with my husband is non-existent. I have developed an itchy rash under my arm and don't get me to talking about the cramps. I am so disappointed and I am having this thing removed ASAP.