Hi thanks for asking question.
You have come weakly reactive typhoid .
For that treat it with cefixime like antibiotic.
You also have complaint of 
chest pain.If you have associated cough and fever then rule out pneumonia like infection by chest x ray or sputum examination.
If long term anorexia and 
weight loss present along with fever then 
tuberculosis also gas to be ruled out by chest x ray and sputum.
If you have vomit of blood and associated abdomen pain present then do serum viral marker study with USG for rule out 
hepatitis.
Respiratory infection and excess cough also can lead to blood in spit.
If you have heart problem history then it is also investigated as 
mitral stenosis like condition also can lead blood in sputum.
Wish you good health.
I hope you will satisfy with my answer