since you have already completed with course of antibiotics, you can start with mucolytics and inhaled steroids to tackle allergy

medications:   start topical steroids( nasal spray)    fluticasone and azelastine combination spray,  2puffs on each nostril ,morning and night. x 3.mnths T Cetrizine. 0-0-1,   when symtpoms are not in control lifestyle changes:   1) steam inhalation. twice a day. 2)double mask at the time of house work. 3) cover your ears with cotton to reduce the impact of cold,  wearing home footwear ,mufflers and sweaters,  room temperature control heaters 4) intake of fruit everyday. (citrus) to increase your immunity

Tab Allegra M 1 tab ones daily at bedtime for 7 days Duonase nasal spray 2 puff twice daily for 7 days Avoid egg prawn brinjal ripe papaya masoor dahl cold perfume pollen dust coconut oil