Since last 2 months I am having irritation in throat and have to clear my throat constantly. It get worse after having meal and while sleeping. No coughing ,no chestburn or fever. Just irritation and constant clearing of throat. Went to two ENT specialist but antibiotics didn't work . Got my blood check and chest x ray . Everything was unremarkable as per report. I work in night shift can this lifestyle be associated with my current condition.