I having cough problem since 2years and i have no cold or fever.and the cough comes out after eating and early morning.and it is transperrent thick?

Reflux: Your symptoms sound like they could be larygopharyngeal reflux. It not an uncommon disorder where you get reflux from your stomach to your voice box. Patients often complain of frequent throat clearing or even having the sensation of something stuck in the back of the throat. Cough can also occur frequently. Recommend seeing an ENT specialist as they can look at your voice box.