Hi. I can understand your concern. You are probably having allergic rhinitis.Allergic rhinitis is a due allergy to dust , pollens etc. Usually presents as running nose, excessive sneezing, blocked nose, headaches etc. It is ideally treated after consultation with a pulmonologist / allergist. Usually treated with intranasal steroids and anti leukotriens.For prevention you can undergo allergy skin test which will tell you allergens which you can avoid, done by allergist usually. Avoid pets at home, clean your bedspreads once a week in hot water and sun dry the same, get yourself vaccinated against influenza and pneumococcal pneumonia to avoid asthma exacerbations. Don t worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks.