Im concerned something is wrong with my Mirena

Patient: I am a 22 year old female. I got the mirena approx 3 years ago. About 6 week after having it put it my periods had pretty much stopped entirely and my cramping had become minimal. Before getting the mirena I had really irregular periods and really bad cramping. Ive had no issues with my mirena since getting it, but over the past few days Ive had really bad cramping like I had before getting the mirena and today I got my period. It’s much heavier than I remember it ever being. Am I just experiencing a random period? or could it be something more serious?

Symptoms: Severe abdominal pain, bleeding, dizziness