"I dont know too much about diseases or sex at all"
Well, you better learn if you're out there having it! In this day and age, there is simply NO excuse for someone being naive about risks and claiming they are uneducated. GET educated, it is as simple as that!
You have been on the forum to know when to test....until then....symptoms are useless...you cannot gauge risk by symptoms. Continue following up with your doctor to find the cause of your symptoms...and be sure to request a full STD panel. Everyone seems to always be SO worried about HIV, yet they fail to worry about other STD's which are MUCH more common and MUCH easier to get!
Start protecting yourself, or you'll end up with something you don't want! And, educate yourself about sex amd safe sex, and STD risks.
Don't judge you? You've been coming here long enough to know how to protect yourself from contracting HIV. Then you go out and have unprotected sex and then come back to this forum. Unbelieveable....It's probably time that you work with a mental health professional.
And next time please insist your partner uses a condom
3 weeks is too early. If you have another test at 6 weeks and it is non-reactive, that will be highly reassuring if not conclusive as most infections are detected by then. Your doctor will probably want to test you out to three months, which is considered conclusive by everybody.
As far as your symptoms, you can rule out HIV as a cause. I'd advise you post in the STD forum to deal with those issues.