Hi, and thank you for your question
The 4th Generation HIV antibody test is accurate 3 months after potential exposure to the virus. So if you had a negative, or non-reactive, result 3 months after exposure, this means that you do not have HIV.
It sounds like you have quite a lot of anxiety about this encounter and the fear of HIV. Our Worry and Anxiety page has some helpful tips on managing when worries are taking over. If you find that you are unable to concentrate or function due to your anxiety, I would also recommend seeing someone like a counsellor or even a family doctor to discuss this.
Let us know if this does not answer your question or if you have any more questions or concerns.