The cramps start to really really hurt, and I feel like
throwing up. I move to the toilet because I have a feeling of intense constipation, I sit like this hunched over for about an hour of horrible cramps, sickening nausea and sweat.
Occasionally I'll try to get up and usually switch to leaning over the toilet because I feel like I'm going to vomit- however in my history of this I don't recall ever actually throwing up, though the urge is always strong.