Most cases of troublesome cough reflect the presence of an aggravant (asthma, drugs, environmental, gastro-oesophageal reflux,upper airway pathology) in a susceptible individual.
The most common causes of chronic cough, other than smoking in adults, are postnasal drip, asthma, and gastro-oesophageal reflux disease
The most likely cause in your case may be a nasal drip accumulation ,GERD ,reflux where is stomach acid splashing up causing up recurrent dry cough and lots of mucus drained in your biginning of your throat .
People with 'chronic throat clearing' do it all day, up to several times an hour, and have been doing so for at least 3 months. Chronic throat clearing is simply the clearing out of mucous, or perceived mucous, from one's throat.
you may have these symptoms :
Heartburn (but may have no gastro-intestinal symptoms).
you may cough at night due to stomach acid splash into the esophagus
Cough when eating/talking.
if this is the condition you may check with your doctor to take some medications depending on the diagnose
other causes of your symptoms might be an allergy it depend on irritant exposure if every time you develop this cough is due to exposure of a certain irritant then the cause will be allergy ,avoid irritants and you can take antihistamine medicines and check with doctor for further investigations
IF you feel almost weak tired beside the symptoms you mentioned then you must go to the doctor for more serious causes .