Hello, I have had my mirena for almost two years now and have had no significant problems. Well, for the past few months i have had my period like 3 times each month... Each time with cramps, as if i am getting my period, although it is very light...and now the blood is brown. Every month before this started happening, i had my period once per month and very very light. I am concerned that i could be either pregnant or that the mirena has moved. Is this normal?