I am currently on the mirana IUD birth control and I have been for over 3 years now. I also have not had any unprotected sex in the past few months. Since last month, (the cycle before my last) I have been experiencing light bleeding right after the end of my cycle, some dark brownish and some pinkish. I have also been experiencing some light cramping on and off. I'm hoping this isn't something serious, because I have really been putting this off, but now its just getting irritating. :(

It will go away after a while :) if it carries on for much longer go to docs, best way around it