Weird blood clumps and shit?!

Okay so I got my period today just like every other month but this one is different. It's heavier than normal, I bled heavily through light tampons today which is normally what I need to last 6 hrs, but I put a pad on because light tampons was all I had and my pads are regular flow so I used them, but today I got up off my bed and felt this gross feeling down there and it felt like my pad was full of blood and over flowing almost, so I pulled my pants down and sat on the toilet then clumps and clumps of gooey dark bright red blood was falling out of me, it felt like my vagina was taking a shit, It doesn't look like my uterus lining at all but it's so weird and uncomfortable in my pad because it feels like a gooey glob in my pad and it won't stop. My second day is tomorrow which is my heaviest day and I'm scared, the only pad that doesn't make me feel like my vagina shat blood goo is a super pad for sleeping!1!1!1 sorry it's long :(