Can u have normal liver function & still have hepatitis?

I have had three liver enzyme test in the past 18 months and all have come back with numbers well within the normal range. The doctors have all said that it is not necessary to give specific test 4 hepatitis because my liver functions are normal. I originally went in for HIV/AIDs and hepatitis testing because I am experiencing a dramatic loss of fullness in the face. It is mainly concentrated in the area most commonly referred to as the laugh lines. I also am experiencing a tightness or pulling sensation in the same area w/ slight pain. Although all 3 HIV/AIDS test were retuned with NEGATIVE results and all liver functions are normal, my symptoms are worsening! Is it possible that I have hepatitis with normal liver function or could there be some other disease that is causing this problem?