I had the mirena for about 3 years and before that I was on the depo shot...so I have no had a period in over 4 years. I had my mirena removed January 12th(just about 2 months ago). My husband and I are trying to conceive. I took a pregnancy test February 15th and it was negative. March 3rd I got what I thought was my period for the first time since my mirena was removed. It was extremely heavy and very bright red. It also only lasted 2 days. I don't know what to make of it. If it's something I should be concerned about. If it was even my period because it was so short.