Yes, that's correct. With mirena it might take a few months but eventually your periods should get lighter or may stop completely.
I have the mirena , and its to help me have a period but its been bleeding tootoo much I heard the first 3 months it a act like this though
Which one did you get? Also, is it heavy bleeding or just light bleeding? If you have paraguard, it causes heavy bleeding and bad cramps. If you have mirena then it might take a few months but eventually your periods should get lighter or may stop completely.