Should i stay home from school tomorrow? please read?

my period is HORRIBLE. it's never been this bad. i'm soaking through 3 or 4 pads every couple of hours. i've ruined 1 pair of pants (the other pair i got the stain out) and 4 pairs of underwear. last night i had soaked through my favorite pair of sweatpants, my favorite pair of underwear and onto my favorite pair of bed sheets (talk about bad luck), and it was a lot of blood. i've been super dizzy too. i've been having horrible cramps and muscle pains too, and really bad mood swings! i haven't told my mom yet because i haven't gotten a chance to yet, but should i tell her? do you think i should stay home from school tomorrow?