Mirena and heath

i have had mirena for about 8 months and im ready to get it out...its the worst thing ever! i am only 18 yrs old so i was kinda worried about getting it(but my doctor kept telling me its the most effective birth control out there) and not to mention it was about 4 months after i had my daughter and I talked to a nurse and she told me that it was probably put in to early..now i suffer with chest pains,depression,headaches,backaches,very bad mood swings,really horrible periods,weight gain, and the worst smell down there.I called the doctor that put mirena in for me and they told me i would have to pay almost $300 and that they most likely wont remove it.i don't know what else to do...besides deal with it.