Girls have been having cramps in their upper abdomen for three days no…

Girls have been having cramps in their upper abdomen for three days now, where the stomach is. It hurts very much. I don't eat anything properly, I always want to drink. I'm not on the list. Next week I will go to get up. What kind of pain is this, maybe someone had it like that? I'm drinking Elevit and sorry, but I go to the toilet sparingly and dark green. Is that normal?