Ok, since the 9th of December I have had a heavy period going through a whole box of 19 then a box of 40 and now half way though a box of 34 tampons and my period is not getting lighter. I've had large blood clots, I've never had a period this long not blood cloths that big before, a size of a quarter and about 3-4 inches long. Has anyone had this? Am I to be worried?