I have been bleeding for a few days and my cycle is normally very regular. And it hasn’t been just spotting it’s been full on blood. It’s calmed down since then, but I’m still worried. Sign of pregnancy?

UPDATE: Two tests say I’m not pregnant. I’ve been bleeding for eight days now and my period isn’t supposed to start until this Thursday. So this started a full eleven days before my extremely regular period. So now I’m wondering what the heck is going on?