I used to suffer through long, painful periods, with flow so heavy that I was visibly pale from blood loss. That was before I discovered the NuvaRing. It's this clear thing that's slightly smaller than a hula-hoop for a Barbie doll would be. Just a little larger than one of those plastic rings that goes around a milk gallon to keep it "sealed" prior to purchase. You slip it into your vagina for 3 weeks, take it out for a week, and then put a new one in at the end of the 4th week. The hormones are absorbed through the mucus membranes there, at a constant level. You can have sex around it.
Since I began using it a year and a half ago:
I might (but usually don't) get cramps for 2 hours now TOTAL, each month, and they're so mild I no longer take ibuprofen (I used to take 6-8 every 3-4 hours, which isn't good for you)
I can use "normal" pads at night
I can use "regular" tampons (which I'd never been able to do in my life)
My periods last about 4 days, with really light flow on the first and last day
When I change a pad or tampon, it's because it's hitting the 6-8 hour "limit," not because it's overflowing
I took oral birth control when I was younger for endometriosis, and didn't have the same amazing affects that NuvaRing has had. You should definitely see your physician, preferably a gynecologist, about bleeding that is that heavy. It isn't normal, or safe.
Someone had advised to use tampons because they can be left in for up to 8 hours. If your flow is that heavy, that won't apply to you...you'll probably have to change them just as often as the pads. When a tampon is "full" the blood starts leaking out. This presents a really good opportunity for a lot of bacteria to grow, and possibly to grow inside of you too. If a tampon is left in too long, you can even get toxic shock syndrome (like those little warning papers in all the boxes).
I hope things get better, and take care of yourself.