Liletta IUD

Hello everyone. Is anyone else on the liletta IUD? I had mine inserted on August 18th and have been constantly bleeding since August 26th.. Its not painful or anything but its back and forth on being really heavy and has now started having miscarriage like clots. I also am barely feeling the strings when I try to feel them. I go to the doctor today but they seemed to be blowing it off like it was nothing. Has anyone had a similar experience? If this doesnt work i dont know what option to go with since i initially got pregnant using nuvaring.