This website is based in Canada, and we cannot comment on the tests you had done in Uganda. I don’t know if they are the same tests we use in Canada, or if the tests are different.
In Canada, the 4th generation HIV test (AG/AB) is not a rapid test, but a blood tube we send to the lab. This test is 75% accurate at 3 weeks, and 100% after 3 months.
We also have the rapid test (called an Insiti test) which is a 3rd generation HVI test (AB only). This test is 90% after 4 weeks, and 100% after 3 months.
If you used our test, we would say that you don’t have HIV given a negative test from Oct 27th, which is more than 3 months past the date of potential exposure.
I would just ask the people who did your testing for the window period of the test they used. I would be surprised if it is very different than the 4th generation test we use.
Lastly, regarding your flu-like symptoms, those symptoms can be caused by mange things, including stress, seasonal cold/flu, etc. We would not suspect HIV just based on your symptoms.
Hope this helps!
Please feel free to submit another question if needed