IUD and tampons

I got my IUD two weeks ago and I have been bleeding ever since sometimes it gets kinda heavy and I would like to use a tampon. I always planned Parenthood and they told me it's fine. I asked a nurse and she said it's be better if I just use pads for now. I'm waiting to talk to my doctor about it because I just keep getting mixed reviews and I hate using a pad, but what were your experiences with the iud did wearing a tampon have any effect on your IUD?

edit: I put one on for like 30 minutes and I had to take it out because it just felt uncomfortable like I didn't put it on right anyways would that mess work the IUD? I had put it on before reading your responses and now I'm worried.