Tongue biopsy

Hi all so about 4 weeks ago, I noticed I had a white patch on my tongue, so i went to go see the gp and they didn't have any idea what it was, and transferred me to see a consultant at the local hospital, I've got a biopsy coming up on friday and then on the 28th I should get my results back, I'm just wondering if anybody else as had the same thing. 

Thanks 

M