Iud help

Emmy

I have a Iud I've had it for almost a year. About 4 months ago I started getting really heavy periods and really bad cramps. Is this normal? I have a lot of blood clots as well. Are there other symptoms that I should know. The internet wasn't very helpful. My boyfriend and I used condoms for many months and I didnt have one period and we haven't used them lately is this a problem?