Period

Ever since my 2nd child, my periods have been awful. I also had the essure put in after him as well. My period is so heavy I'm going through the super plus tampons every 2 hours. I'm clotting like crazy. Everytime I pull out my tampon it has a quarter size clot on it or it falls out. Any advice? I plan on talking to my obgyn but was wondering if this has happened before to anyone else.