cud be viral fever..odr symptoms like joint pain pain abdomen cough cold must be mentioned if its viral fever it wud take around a week to go.. if joints pain present cud be dengue fever, if  pain abdomen loosemotion is present cud b typhoid fever if fever is associated with shivering it cn be malaria or UTI..so u need to evaluted first to get a diagnosis fr nw to alleviate fever take tab dolo 8 hrly till fever present tab limcee once a day fr 15 days antibiotics depends on odr symptoms n test results