Hi Ruth, I have a Mirena to control my periods. I was having periods every 2 weeks and each one would last about a week. My periods have completely stopped, which I expected as I have had several Mirena coils over the years as contraception and my periods had always stopped when I had them. However, there has been zero effect on my other symptoms - bone and joint pain, brain fog, low mood, sleep disturbance etc. Would be great if my Mirena could sort that lot out too!