Since 2 -3 weeks I am experiencing mild cough and I have to spit like 100 times a day and I should keep cleaning my nose for the entire day . I always feel the sputum rolling over in my throat. My nostrils are blocked most of the time and I have to breathe through my mouth and sometimes I even feel breathlessness. Sometimes I even get a headache like heaviness and itchy sensation in my eyes. Please suggest me a remedy for this.