Welcome to HCM.
through fingering is a remote possibility. Young women's vagina will always be wet, more when get stimulated.
Even in the presence of a sore over your finger, sticking blood need not always be infectious. You are not knowing the HIV status of that massage
girl. There is a possibility that she could be negative for HIV, then you need not worry about HIV at all. Even if she is HIV positive, transmission through a wound in the finger, the chances are very low only.
DNA PCR at 17 days and Antibody test at 27 days are not conclusive. Better repeat DNA PCR by now will almost be conclusive or Antibody test to be repeated after 12 weeks.
Early HIV symptoms of HIV usually occurs after 4 weeks. The symptoms explained by you may likely to any other throat infection
Good luck to you.