Heavy period

Amy
Hi, can anyone point me in the right direction. I've always had very heavy periods since I got the coil inserted but for the past 3 months my periods have been ridiculously heavy. I wear super plus tampons & I've had to change every hour on the hour because they've been soaking right through & completely covering my underwear & clothes in blood, don't want to be too graphic but there would be that much blood covering me it would look like I've been stabbed!!! . I've tried different brands etc could there be something wrong???