The doctor friend of mine who has been advising and helping on this adverse side effects says that it does eventually go away. She sustains that since Mirena and in general contraceptives of this characteristics make you feel pseudopregnant it causes all those bad sysmptoms in different degrees as we are all different, so in general we all have a different degree of Mirena suffering and therefore some different healing.
Her advice is always to seek medical assitance and not self-medicate ever, ever. Sometimes I drive her crazy but she is trying to come with some kind of general indications to help us all to get bad symptoms relief without compromising our health or causing other side effects.