Anyone else have this? I started my AF lastnight and was in agony for hours, its ok this morning though as it usually only lasts the first 5-6 hours, but to be honest im getting sick of it. For those that dont know, its the term used for very painful periods, either primary (no cause) or secondary (as a result of another condition) and its when the cramps go up your back and down the backs of your legs, and in extreme cases like mine can also cause vomiting, confusion and dehydration. ive decided that once we have a baby im getting a hysterectomy, im sick of periods running my life!!!!!