Abdominal pains in form of cramps, loose, green stools, many in one day, accompanied with fever are all symptoms of gastroenteritis, or bowels infection with virus, bacteria or parasite.
It is better to stop Imodium use, since its benefits aren't important ones (controls the diarrhea, green liquid stool, but, it should be avoided when fever is present).
Try to stay hydrated well, to replace the water and electrolytes you lose through watery and frequent stools.
Eat food with probiotics in order to control diarrhea.
Most of the cases of gastroenteritis solve on their own within a week.
Avoid food rich in sugars and fat, instead eat rice, toast bread, bananas.

Thank you for this information, I am in very good health normaly , im not over or under weight, I eat very well and im fit. I feel ater 35 hours of this, that im getting better, still very tender with cramps but have taken advice and stocked up on bananas and rice, i have drank over 10 lts of mineral water in the last 30 hours and hope that it will all pass in the next day or so. once again many thanks .. Smolenski