Hi, and thanks for your question
As long as your HIV test was done at least 3 months after the sexual encounter, the results will be accurate and there should be no need for further HIV testing
The symptoms you are describing are not specific to an HIV infection. If you are concerned about your symptoms you may want to visit your care provider or doctor for further assessment beyond STI testing.
Let us know if this does not answer your question or if you have any more questions or concerns.