What Is The Treatment For Heavy Bleeding During Menstruation?

irregular bleeding. I couldn't afford the pill for the last two months and I've gone through 3wks of heavy bleeding; one week of no bleeding; now I've been bleeding heavy for the past 3days. I started my pill regimen again as of yesterday. My pharmicist said it will stop in the next 24-48hrs; but how long until I stop bleeding all together? I saturated 3 super plus tampons in 24hrs. I'm 5'2 and 110lbs- I CAN'T TAKE THIS KIND OF BLOOD LOSS