Nothing to worry as far as you had your exposure is a protected one.
Not scrap-able White line on the top of your tongue is not a symptom for HIV
is scrap able and
Oral Hairy leukoplakia
will occur over the lateral border of the tongue and moreover it is too early (12 days) to have HIV manifestations.
So you need not worry about these things.
Consult your physician regarding the white line on your tongue and have HIV screening after 12 weeks of your exposure.
You can very well relax and the possibility of HIV in your case is very very meager.
Get rid of your fear.