Chronic Cough !!!!!!

[gtfpv]

OVER THE LAST 12 MONTHS I HAVE DEVELOPED A COUGH WHICH COMES AND GOES. it is becoming more so than less .
decmber 2006 had a cough that lasted 3 months . had blood tests and all was ok , this was put down to summer post viral cough , by a doctor.
september 2007 had bad flue which side lined me for 1 week . had to stop training ( exercising for 2 months as i had no energy. )
december 2007 coughing started again
january, after 6 weeks i go and get a chest x'ray , which shows all clear, then cough gets better ( stops) 2 weeks later cough starts again , now 3 weeks and cough is more consistant .
i have never had astham or bronchitis or respitory illness in my life .
anyone else suffer from this .
it's like a dry smokers cough , except , i dont smoke.
coug lollies work . they mask the problem . ventilin sometimes stops the coughing and sometimes makes it worse.
sometimes i just have a coughing fit .
all i have to do is raise my chin up and i will cough .
if i laugh it turns into a cough . i have no idea what this could be ??
blood test clear 12 months ago, and recent chest xray x
clear .
it's more frustrating than sick, a cold drink can cause a coughing fit. and a 1/2hr hard workout on a rowing or running machine doesnt make me cough or be short of breath.

anyone else suufer these symptoms ?
i'll have to go back to a doctor and look further into it .

my GUESS IS after doing youtube searches , the yanks have come up with a new previously undiagnosed form of ASTHMA . I THINK THEY REFER TO IT AS COUGH INTRUSIVE ASTHMA , WITH NO OTHER SYMPTOMS ???