Menstruation :: Collapsed, Puking - The Cramp Pain Intensified Tenfold

Sunday was the first day of my period. I woke up in the morning with some bad but tolerable cramps. Had some yogurt, took an aleve, and ran myself a hot bath. The hot water helped for a bit, but soon the pain was back. While I was getting dressed, I got hit with this sudden, intense wave of nausea. I quickly popped a Zofran, but it didn't seem to be helping, so I ran to the bathroom. The nausea calmed down a bit but I felt like I had to poop, so I sat down on the toilet. And from there the cramp pain intensified tenfold. It was so bad that I could barely move. I was shaking and soaked with sweat, the room was spinning, I thought I was dying. I called for my roommate and asked her to bring my hydrocodone because I couldn't stand it. I took a pill and finally managed to get myself off the toilet. As I was walking to go back to bed, another intense wave of pain hit me and I basically collapsed onto the floor. My roommate was just picking up the phone to call 911 when I started puking violently all over the carpet.

So they took me to the hospital. I threw up three more times and they gave me nothing for the pain. I sat in a chair squirming and groaning in agony and dry heaving for about an hour and a half, and then finally the pain just suddenly stopped and I felt a million times better. I ended up waiting about 9 hours to be seen. They did a pelvic ultrasound, a pelvic exam, and a urinalysis. All normal.

I don't see how this can be normal. It was sincerely the worst pain I've ever felt in my life, but the only advice they could give me is to take aleve around the clock when I start my period. I don't know what to do other than set up an appointment to see an obgyn, but am I the only one who's experienced this? Could they have missed something?