didn't have one for 5 years it was great thought this was the best birth control ever then decided to have another child so after having my second child it was no brainier to get the mirena again I've had for two years now and still having periods the are light but could last for a week when I had regular periods I would have them for 3 days. I've had it checked it's placed correctly. I'm just wondering why it's not working like the first time. It's getting frustrating. Also when I get my period my breast hurt horribly and they never done that before and get cramps. I thought that it helps with cramps and I never had a heavy periods to begin with.