Help! Pale blue/green tongue

Okay, I have been on my pre-op diet for 10 days - surgery on 7/13.  When I got up this morning I noticed that my tongue was an odd color - very pale blueish-green. 

Anybody know whats up with this? 

I feel fine.  I have my Pap test at my PCP office on Thursday, if it doesn't go away by then, maybe they will have an answer.

I just hope it isn't something that will affect my surgery date.

Nancy

was it your toothpaste??  

It was the same this morning.  It looks okay right now.  I'm thinking it might be the Tums that I chew when I go to bed.