Hello Amanda, Welcome to Health care magic Forum! This high temperature and the pain might be from and infection in your colon,the neck pain, dizziness and headache is due to the Electrolyte imbalance which happens in high temperatures where there is silent dehydration. have you had any loose bowels, If so kindly visit your gastroentrologist for further evaluation by stool culture and colonoscopy, Till then you can follow this diet: Drink lots of Fluids Avoid fatty foods, Meat and dairy products Take fruits like banana, orange and apple You can try taking homoeopathic medicine Biochemic 25 which helps curb the infection, Wishing you good health!