I've had the mirena for 2 years now and this past month I have had bleed off and on since the 17th. I've been cramping and just feeling yucky. Normally I have had my period like clockwork and it always last about 6 days. I've also suffered from horrible migraines for the past few months (idk if it has anything to do with my period). I have been worried about it implanting, or being pregnant. Is that a common issue that others with the mirena have experienced or is it something uncommon that I need to go see my Dr about?