So yesterday I started my period. No big deal but this morning at work I was cramping like crazy, my hands were shaking, and occasionally my vision would double. It lasted for a few hours but the cramps still lingered. After work I went to school and was about to go to lunch when my cramps went from a level 4 to 10 in a matter of minutes. I tried to eat but all I could focus on was the pain. I left school and was on my way home and I got extremely light headed and had to stop because I was afraid I would pass out. After about 5 minutes I left. I got home took some pain killers, grabbed a heat pad, and fell asleep. Can someone please tell me if this is normal? This has never happened before and I'm a bit scared.