So let me be sure I understand – she gave you oral sex, right?
Her giving you oral sex would have nothing to do with your tongue.
Do I have that mixed up?
If you have burning with urination you should have that checked out. Herpes would not cause burning for an extended period of time. I honestly think that this very short encounter present very close to zero risk. If you are having burning with urination, you should see a clinician to have that evaluated.