You can’t get HIV from using public restrooms. AIDS is mainly transmitted through sexual contact, blood transmission and vertical transmission from mother to child. Although HIV is contained in the body fluids of AIDS patients, HIV will lose its activity soon after leaving the body and will not survive easily in a dry environment. If you have high-risk sexual behavior, you should go to a regular hospital or CDC to have blood tests to make a clear diagnosis. HIV infection will go through the acute infection period, asymptomatic infection period, pre-AIDS period and AIDS period, timely antiviral intervention in the early stage can delay the time to enter the AIDS period.