If you have symptoms of AIDS but cannot detect the antibodies, you may be in the window period of AIDS and the antibodies have not been detected, or you are not infected with AIDS. Early symptoms of AIDS may include flu-like symptoms such as fever, dizziness, fatigue, loss of appetite, diarrhea, and swollen lymph nodes. These symptoms are not unique to AIDS, so the diagnosis mainly relies on blood tests for AIDS antigens and antibodies. 1. AIDS is in the window period: It takes a certain amount of time for the HIV virus to enter the body and produce antibodies, usually around 2 to 6 weeks, and the antibodies may not be detected during this time. 2. Not infected with AIDS: The patient himself is not infected with AIDS, but may have symptoms caused by other diseases and mistakenly think that he is infected with AIDS, so the antibody test is also negative. If you suspect that you are infected with AIDS, you need to be examined and diagnosed in a professional and regular hospital, and you should not blindly listen to false information on the Internet.