HIV infection can occur after even one sexual event, thus, people must always be diligent in protecting themselves from potential infection. So the only way to know for sure whether a person is infected with HIV , if he suspects he has signs of hiv is for them to have an HIV test.
Testing early can lead to timely care and treatment that can improve the health of a person with HIV and prevent giving the virus to others. Without testing, people who have HIV and don’t know it won’t be able to get care and treatment. They also will be at greater risk for serious health problems and early death with HIV, and can give the virus to others without knowing it.