I have been to my regluar doctor today and of course he doesn't know what's wrong with me but he did say the bump on my lip isn't a mucole as mentioned before and I also looked online and mines doesn't look anything like the photos..I'm begining to worry I've seen 9 doctors who all refuse to do biopsy but its been 2 weeks and I still have this pimple like bump on my lip and white coated tongue(no its not thrush been treated twice and oral surgeon ruled that out completely) now I'm worried and keep thinking doctors won't do anything until I have open lesions to biopsy but I need to catch whatever is going on early... what else could cause this white coated tongue and hard pimple on lip which isn't decreasing in size at all its appears alittle lager then it was 2 weeks ago and it isn't painful...it has no fluid in it and looks whitish..I need HELP!