copper IUD Please help

Cinthia
Since getting the copper IUD in August 2016 iv had longer heavier periods and cramps. Ill have my period for 2 weeks and continue spotting for another week. So far ive been bleeding for 21 days and logging it with <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a>. Glow tells me to see a doctor as this might be a sign of infection. Has anyone else had these complications with the copper IUD?