Period questions. Is this normal?

I have always had rough periods. I had my first when I was 10 and I thought I was dying. I would throw up atleast twice the first 3 days and the cramps were so bad I often missed school. Lucky me my periods lasted only 6 days. Now I'm 27 and its gotten so much worse. I'm on my period now and last night threw up so much I was dehydrated. I couldnt keep water down and I went through 3 tampons (s+) in an hour. Im factor 5 positive so most birth control is out. I just want to know if Im alone in this or if its this bad for anyone else. Do I go to the ER? Am I an idiot for thinking I should go to the ER for a period?