I am glad you reached out when you have questions like these. It also gives me a chance to clear up any misinformation you've heard about how HIV is transmitted. We cannot give out specific medical advice. However, we can say that the risk of transmission varies based on the type of intercourse and if the HIV positive partner has an undetectable viral load. The five fluids HIV can be transmitted through are breast milk, blood, precum, semen, and vaginal secretions. It cannot be transmitted through saliva.
HIV does not live very long at all outside the body. You can definitely learn more about the specifics which may ease your mind through this article: https://h-i-v.net/transmission.
That being said, regular STI testing is part of normal health care, and the only way you can be sure. When was the last time you were tested? - Liz (H-I-V.net Team Member)