Period change after getting the IUD?

Tori
Hey! I just got the IUD about a month ago, and I just got my period and it's been heavy and abnormal. Normally my period lasts 5-6days and its my period has been going for almost 10 days with extremely painful cramps... Also my period has been the same since I first got it even after two kids. Just wondering if anyone else has had a similar experience or if I should be concerned. Thanks 😊