Heavy Menstrual

So finally after almost 2 months (last cycle was Nov. 13) I finally got my period! I've always had heavy bleeding but I'm bleeding extremely heavy to the point where I'm changing my tampons every hour to hour and a half (I wear super Plus tampons) I'm also passing large clots, the clots are actually pushing the tampon back out... Has anyone else had this happen or know what it could be? I wasn't pregnant took 3 test