Hello All the symptoms mentioned started 10 days ago with butt pain, headache, fever, night sweats , plugging of ears and at last COUGH & PHLEGM. These symptoms may be due to , these includes. 1 Allergic bronchitis , as you mentioned that there is a cracking inside chest or lungs means crepitation or expectoration or phlegm . Actually this is due to borncoconstriction which develop whistling sound . When cracking sound hears means due to secondary infection ( phlegm has developed ).Mite , dust , sudden fall & rise of temperature , pollen molds , cotton thread fibers , smokes are predisposing factors of these symptoms and known as allergy , if infection is there we call it as allergic bronchitis ( as in your case) . So ,if possible avoid these predisposing factors. When such type of patient visit in my clinic I prescribe monteleukast+ bambuterol ( combo) twice or once in day depending upon the severity of infection & allergy. 2 As you mentioned that there is phlegm , so may be due to bronchiectasis . Diagnosis can be confirmed by physical as well clinical examination by a physician . Also get in blood for C B C, E SR , X ray chest with sputum examination. 3 Tuberculosis is least possible cause in your case due to short history of illness. As you mentioned that you took so many medicine like , paracetamol , nyquil , for common cold, mucilex i.e ambroxole etc but these all medicines are only for relief not for cure . In my opinion consult physician and get his opinion. Good luck.