Hi 2 years back I had risky exposure , got through my all tests,  blood , STI panel , HIV, TB  and all , they all are negative . The results are negative till date But I have a sensation of swollen lymph nodes under my armpits , and a little doubt of swollen lymph at upper chest area . So my question is , can it be any STI , HIV  or what could be the root cause of this swelling , can the swelling be reflected in my CBC , as the 'lymphocytes' count is also normal over there or it could be a consequence of severe  sinus . Awaiting for response