I too have had a caugh for like 3 weeks now.. and im starting to worry... but  never any fever or any body aches... just that post nasal drip , at times constantly having to clear my throat ... but other times Im fine , I feel sometimes like I can't catch my breath.. like asthma ( but I don't have asthma). I recenlty got laid off and so no Insurance that is why Im waiting to see if it just passes.... I recently applied for that unitedhealthone insurance $97.00 a month .. I figured its better than having to pay full specialist visits... but will be going to see an ENT as soon as approved for it.