Hi, For Almost A Week My Tongue Has Felt Like

Hi, for almost a week my tongue has felt like I ate something to hot and felt like it was scalded, but today I woke up with it number and yellow-whitish. I have very good dental hygiene so I know it's not because of that. I even asked a pharmacist about it and showed her and she said I should have it looked at but I'm trying to avoid that. Any info would be appreciated.