I woke up this morning feeling fine, but within about 10-20 minutes, I was struck with very severe lower abdominal cramps on the right side of my body, though the pain was felt more at the back and not the front. I ignored it, but it persisted. It began at about 9:45 AM, and it is now 2 PM. If I stand up straight or walk, the cramping pain is agonizing, nearly taking my breath away. The only way to dull the pain is to sit down and slouch forward, or bend over when standing. Laying down makes it nearly disappear, but if I move, the pain returns. This is the time when my menstrual cycle is starting, so im not sure if its cramps from that, or perhaps from something I've eaten. I try to ignore it, but its persistence has me slightly concerned.