Having no trouble down 'there' WARNING TMI

So guys I got my period yesterday on Sunday, and it's usually really heavy but I'm only sixteen. I've explained my period problems to my friends saying how on day two and three I got through like 15-20 tampons and the tampons are super+. I also said like how on day two and day three I go through both pad and a tampon (same time) in like 10-20 minutes before its all filled. Disgusting I know. But it seems I bleed to much, and I don't know what to do. My cramps aren't even there it's more pressure and extreme pressure. I've never had sex so idk if that even situates into this situation. I'm severely anemic. Like I have to wear those heavy duty pads too, you know the ones you wear after giving birth, yeah those ones. For instance, I just put a pad on like 5 minutes ago, and it's already full. I don't know what to do.!!!!!