Hi I am an anxious person (not overly). I keep myself very busy; however, occasionally have noticed a sensation in the back of my throat almost urge to swallow more than once. This sensation got worse today after paroxismal cough ( had a fit after a handful of skittles). The sensation is not pronounced is not there if turn my head to the right or to the left, only if face forward. This sensation is very subtle still I pay attention to things and it is there. Initially tickle and then I cough to get rid of it. I have cancerophobia in general. Try to keep it uder control but I worry. What could it be?