S.S.
I have the mirena and love it! There's good and bad things about it. My periods are irregular, but light. It is something I would recommend to anyone cause it's been really great for me. Low dose of hormones and maintenance free for 5 years. Also it is extremely effective in preventing pregnancy which was an issue for me cause I seem to be very fertile.
Good luck! It's something you have to weigh the pros and cons about, but there are a lot of choices out there.