I can understand being worried since you had unprotected sex, however, you have now tested negative. Which is great. That is very unlikely to change but since you tested with an Oraquick test, you should wait until the 3 month mark to be 100 percent accurate. Again, it isn't going to change in the real world. Remember that a one time exposure is actually a really low risk of less than 2 percent (and only if the other person is hiv+, it's zero if they aren't).
Remember that HIV is never diagnosed by symptoms and that your symptoms are very likely just every day issues that we all have. You are just anxious and attributing it to your exposure. Try not to do that. If you can get a 4th generation test done, then this is all over. Otherwise, wait until 3 months and take another test to get your FINAL negative.
Calm down. You are certainly going through a lot of anxiety.
I have news for you, a negative with a IV Gen at 3 weeks and another one with a rapid at 6 weeks is absolutely indicative of the fact that you don't have HIV.
At this point, you do have the option of going to a lab and getting your self a standard HIV test to obtain a conclusive, that should help you overcome the stress you are going through, I guarantee it's going to be a negative. Or, should you not have access to a standard HIV test, just wait until 12 weeks to get another rapid, it going to be okay.
Focus on the test result not on symptoms, this forum has been there for more than a decade to see an obscene amount of people complain about every symptom synonymous to HIV, yet testing consistently negative. Anxiety is real, it can do amazing things to your body. I suggest you also see a therapist for overcoming your guilt or fear or whatever is causing you to think about HIV constantly, a seating with a professional would enable proper diagnosis of your situation, reach out for the help. You are going to be okay.
Good luck.