Hi welcome to HCM... Here you are taking correct treatment for typhoid fever.... Swollen throat suggest there might be pharyngitis associated. ... Chest pain could be from bronchitis or from muscular pain secondary to typhoid .. Just now continue given tretment and maintain hydration ... If symptoms increasing than digital chest x ray done.... Meanwhile avoid heavy fatty diet .. Avoid excess spicy foods .... Fried food taken less...It is better to take small meal with frequent interval... Fruit juices taken more .... Maintain hydration with lots of fluid. Take care Advise : if chest pain increased than again consult physician for exaninatoin....