Seriously, some doctors must get their degree and liscence from a bubble gum machine.
The mirena pumps hormones out in your uterine cavity - it will potentially make your fibroids worse. And, you would be adding many more side effects for your body to suffer through because of the mirena hormones.
Some side effects:
Weight Gain
Lethargy
Lack of Sex Drive
Depression
Anxiety
Insomnia
Moodiness