White stone like material appears in my tonsils. I've noticed them 5-6 years ago only. That time they used to come in my mouth when I cough. I had no idea and this used to happen once in 4-5 months that time. But in recent days, like around 3 months, that thing is appearing again and again, say daily. And my throat also started paining. I've visited local clinic, pain and stones stops when take medicines. After week of completion of medicine it starts again. Don't know what to do. My throat hurts and feels like something is stuck in my throat around tonsils. What to do now?