throat problem

I am having some problem relating to my throat. While talking for some time, I feel a foreign body sensation in my throat and it leads to violent cough. I t improves after taking a glass of water. It occuring frequently...once a day. I used to have this problem  for sa 5 yrs or more. They were less frequent. It bused to occur once in 6 months or so. Is it something? A little worried