I had one sexual encounter .three weeks later i tested for hiv and hep in the er. came back negative. nightsweats, tired . anxiety meds or hiv?scared

Recheck: I understand that you tested negative for HIV and fatigue.( A, B and C??). If all tests are negative, I suggest a second opinion re: night sweats and fatigue. Are you implying that this was your only sexual encounter? Did you use condoms or spermicidal foam/gel? If your first unprotected intercourse,this sounds like stress and anxiety. See your GYN for testing and exam. Always use condoms.