I have had the Mirena for 3 months so far and after the insertion I was fine until today I got these really bad cramps and There was a little tiny drop of blood occasionally when I whipped(sometimesbrown) Is this my period or what because I haven't had one since the insertion of Mirena and I don't know what to expect.. Oh me and my boyfriend never use condoms, just pull out which is probably dumb but is why i got mirena...Need some advice thanks!