Liletta IUD

So I got my IUD inserted about a month ago and I have been bleeding pretty much ever since. At first it was light for a week or two then it would stop for a couple days but it came right back. But now the bleeding is more so like a full blown period. I know for the first 3 months you should expect to bleed but I'm a little concerned because I was under the impression that the flow would get lighter. Not to mention the constant bleeding is interfering with my sex life.