Something pinching in my throat since one week. Cough also started from last two days. Feel something is there in throat while drinking water and in hailing saliva. Time to time I have to clear my throat as in cough is hailed. On new year I drunk and smoke. In last two months I did smoke exactly 8 times. After new year I feel my throat with some harshness and then it is continued till now. I might feel it might be cancer symptoms. Please advise what tests I should consider to know what exactly it is?