Have you joined the IUD trend? What kind of birth control do you use?

I have been using the IUD for about three years with no issues at all until this month!! I have been normal on this iud sice I got it. I started Dec 2nd and ended the 7/8th. Well I haven't had an issue of bleeding twice in one month in almost 3 years. Yes when i didnt use birth control i would sometimes get them twice in one month. Though those ones where different! I'm bleeding way to much and I have a lot more cramps. I just don't get why all of sudden after almost 3 years did it start NOW???