RECENTLY I HAVE BEEN DRINKING HOT DRINKS SINCE COLD WEATHER IS HERE...! MY MOUTH HAS METAL TASTE IN IT AFTER WARDS REALLY BAD AND LAST COUPLE HRS, I RECENTLY RESEARCHED WHY AND CAME TO A SITE THAT SAID IT MAY BE MY FILLINGS, ETC...IN MY MOUTH. PLEASE HELP WITH ANY SUGGESTIONS ON WHAT I CAN DO...