I just had Mirena removed today after 6 months. I actually thought I may have ALS due to weird muscle twitching all over. Now I see that it was probably a side effect of Mirena. I just sent the FDA an adverse reaction report , and I suggest everyone who has had a bad reaction to Mirena do this. I had it all: serious weight gain, bloating, breast swelling, tenderness, out of control food cravings and appetite. I am hoping that now it's out , I can return to feeling my old self again.