Will the DivaCup work for me?

I absolutely dread getting my period. It's so horrible around that time of the month. I get TERRIBLE, AWFUL, UNBEARABLE cramps accompanied by vomiting, hot flashes, backache, pelvic pain, pain in my sides. I can't even walk for the first 2-3 days of my cycle. The feeling in my legs is indescribable. It's like a numbing pain and I always fall down if I don't hold on to something for a little while. Not only that, but I'm bleeding like the Niagara falls. I mean my flow is extremely heavy. I use pads, because tampons just don't cut. I am so sick of the embarring leakage and not being able to do things I'd like during that time. All I can do is roll around in bed crying. Its really that bad. Will the DivaCup alleviate these problems? I scared to try it, and I also don't want to get my hopes up.