abnormal uterine bleeding
"I've only been on the IUD for little over 3 weeks now. I've started my period on the 30th of November, it is now the 9th of December. I normally have heavy flows which is why I chose to go on the IUD because I have friends who say it stopped their periods or they'd just spot, it's just making my period last longer then usual. 10 days is a long time and it doesn't seem to be stopping. If it continues within this week, I will get it removed."