Iud new changes

Bl
Ok so I've had The Paragard in for about 5 months. My periods lasts two weeks. Before the iud it was 7days. Never had cramps and my breast would hurt before iud. Once the iud was put in no breast tenderness... now all of a sudden I have gotten sever pain and tenderness on my breast. To make matters worse 4 days before my AF comes I get light pink spotting..... this time around Nope... I have been intimate weekly with my bf but I'm in fear that my iud has possibly failed me but I'm waiting it out till my AF is due which is in a day..... has anyone gone through this? Have you ended up getting pregnant with iud and it took a while to show? Any advice is appreciated