Hi , I also suffered severe dizziness while i had the mirena in the first two weeks post removal it had gone then bam just like nomoremirena said it hit me again dizziness lightheaded and unbalance feeling which i still suffer from to this day its just not constant anymore just around ovulation and period and not as intense i feel it is finally starting to go it think im finally starting to see the light at the end of the tunnel from this NIGHTMARE!! it has been a year since that evil thing was removed