Hello, according to the information you provided, the window period of AIDS is generally three months. After 70.80.89 days of high-risk period, you tested negative for AIDS antibodies in three hospitals, so you can rule out AIDS.
Suggestion:
Always lead an honest and clean life, observe sexual ethics, have a fixed sexual partner and always use condoms correctly. This is an important measure to prevent AIDS. Don't worry too much, you may have some phobias at present.