In recent few years i have been suffering from tonsil stone very often. A round yellowish white ball with very foul smell coming out from my mouth during cough. It doesn't happen everyday but it happens 3-4 times in a month. And there is always uncomfortable felling in my throat. Sometimes i can see the stones near the tonsil and sometimes i can't, may be coming out from down the throat. Please tell me what should i do to solve this. I am ready to consult a throat specialist. Thanks.