From your case it feels that its a chronic problem. Exposure to cold, travelling, pollution, smoking, oily and fast food increases sinus problems so avoid them. Daily start having warm water during lunch. Steam inhalation with tulsi leaves in it twice daily. Turmeric milk in morning and use of ginger and garlic in food will help in long run.

1.vaasa asav syrup after meal 2 tsf with same quantity water. 2.chew yastimadhu ghan vati minimum 6 to 8 a day. 3.drop a castor oil only 2 drops in nostril. apply mustard oil on chest before bath drink always luke warm water. avoid curd,peanuts,frozen items,bakery items.late night food.