There is a white thing on the side on the left side of my mouth (near the tonsils). my doctor told me to gargle but it is still there. ?

Tonsil stones: This could be a tonsil stone, which is debris which collects in the crevices of the tonsils. A physical examination would be needed to confirm this diagnosis.

Tonsil stone: This is likely a tonsil stone. There are pits in the surface of the tonsils. If the pit gets deep enough then flaked off skin cells build up in the pit. They will frequently be white or slightly yellow in color. Use your finger or a q-tip to remove the stones.. Occasionally one can't manage it then we can either use a laser to remove the surface of the tonsil or perform a tonsillectomy.