Mirena Vaginal Hysterectomy, Crying Over Nothing, Heavy Bleeding, Saw 3, Old Mother

Hi, I am a 36yr old mother of 2 boys aged 14 & 12yrs. I had the mirena fitted in 1 1/2 years ago.. had all the bleeding at the beginning, but unfortunately it carried on for months. had very heavy bleeding in months 7 & 8, so heavy it left me feeling nauseous and faint. then it went back to 3 weeks of bleeding out of 4. and thats now how long i bleed for all the time. have heaps of discharge (eww), zits, feeling constantly like crying over nothing. Had hard cyst, which went on its own. got referred to a gyno (cause of heavy bleeding) which i saw 3 weeks ago. he has no idea why i had the heavy bleeding, has no idea why i am bleeding 3 weeks out of four (not heavy) but he is now booking me in for a vaginal hysterectomy.!! I still have the mirena in, only because i am told that if they take it out, my periods will be a lot worse than before i had the mirena inserted!! argghhhh. anyone else being put forward for a hysterectomy??