I think i've been suffering from food poisoning which now seems to be clearing, however, i now have pain in the my right side, neck, shoulder and arm?

Referred pain: When a person has pain along the side/neck/shoulder related to an abdominal problem we usually think the diaphragm is involved.The diaphragm is the muscle which aids breathing (inspiration/expiration). Abdominal inflammation or partial bowel obstruction causes pressure on the diaphragm which is referred to the shoulder. It should resolve as your abdominal symptoms improve. Rx OTC pain killers:)