abnormal uterine bleeding
"I am 43yo and had the Mirena inserted a month/half ago. I have to say I have gained weight excessively (12lbs) but I DO eat a lot and have not been to the gym as I usually do on a regular basis, so in time I will be able to factor in the cause/effect appropriately.  Insertion was "uncomfortable" but bearable. I have read many of the reviews and have to say it is definitely dependent on the person. You will always hear the bad, but for anyone contemplating the Mirena I would do my research on the pros /cons and know you that there are chances of it not giving you the results you want (outside of the bc); i.e. weight gain, acne, etc. I have not had any bleeding or spotting and I get a bloated feeling every now but nothing painful."