Hi welcome to HCM... Here you could have viral respiratory infection like URTI or bronchitis ..... (Seems most likely on preliminary history ) Your chest auscultation has to be done if rales or rhonchi heard.... You needs to given benadryl like decongestent drug .... As you have symptom more than week take antibiotic like cefixime 200 mg BD for five days ... Salt water gargles done .... Steam inhalation with added eucalyptus oil in water for three times a day... Avoid excess spicy foods ... More water ... Take rest for few days. If still no improvement further work up needed with chest x ray or throat swab ... Take care . Advise : pulmonologist consultation...