Indeed in that past I believe oral thrush was present, lesser so currently. This of course is subject to qualification where I would consider it to have been moderate to light. It’s color was variant, ranging from yellow to white. Currently, a very scant white.
The white thrush similar to: http://www.aafp.org/afp/2007/0215/afp20070215p501-f2.jpg
The yellow thrush similar to: http://www.jamesrohr.com/wp-content/uploads/2012/01/coating-yellow.jpg
I do not want medical advice per se, but merely confirmation and supplementation of my research.