dear user thanks for contact HCM about your cough with phlegm i would like to tell you that these symptoms you mentioned refer mainly to have viral infection causing common cold symptoms lead to consequences of cough or soreness of throat and fatigue your feeling of these symptoms should not make you worry as it is common symptom of common cold or bacterial infection about treatment you can take tylenol and cough sedatives as it will help alot to improve cold symptoms ....... you should also drink alot of warm fluids that will make you better ......you should also have bed rest and no effort that cause you be tired or fatigue ............ some times we require chest x ray or blood test for investigation if symptoms get worse but now you not need that but till now you need not to do that if bacterial infection suggested you can take amoxicillin or erythromycin as it is antibiotic has great role in treatment of bacterial infection .......... wish you healthy life