Hi, i have a random chesty cough that lasts for about an hour and can come on late at night or early in the morning. It ceases after about and hour and can ocuur again 3 days later, the enxt day or a wekk later. It has been on and off for 3 weeks now. Im 38 5 feet 8 and a half inches tall and 11 stone. I used to use a whizzer for allergies when i was young and suffer from hayfever.