Sorry but I agree with Sqad.. it doesn't sound like an emergency to me. As soon as I started my periods when I was 12 I had agonising cramps that would leave me bedridden for days. I ended up quite severely anemic and was also house bound by how heavy they were as well. My doctor tried me on a few tablets (can't remember the names of them) but none of them worked. He eventually tried me on microgynon along with iron tablets and they are much better. I still get agonising pains but not to the extent that I can't walk or anything like they used to be. I also think they were that bad that my pain tolerance has went up.
We are the same age btw and I think that you should take it upon yourself to see a new doctor, especially if your current one isn't very helpful. And I mean that as in a local surgery and not ER. xx