I have had food poisoning which consists of vomiting and diarrhea what could help me get over this?

Well i ate a cold donna kebab by accident =( it didn't go down to well.I had severe diarrhea and vomiting.A couple of days later i stopped vomiting but still terrible diarrhea i now have terrible stomach pains which are constant.My diet consists of toast lucozade and dry cereal.Tis is doing nothing to stop diarrhea or nothing.My mum gave me a tablet which is meant to help stop the diarrhea it just made it sloppier =( anybody help me i beg of you the pain is un bearable and it hurs my family to see me like this please help.