I have developed these splotches on my tounge, at first I thought they were blisters but they do not hurt nor will they go away. I have had them for over a month now. Any ideas on what they could be? I go see my Rad Dr on the eight of August but I'm thin king I may make it earlier. Also anyone have any ideas on how to clean the tounge? I do drink a lot of coffee and I brush constantly but I get this junk on my tounge and it won't wash.