Do I have HIV?

Hello

8 weeks ago I had protected sex. At 6th week i tested for HIV and result was negative. last 6 weeks i have low grade fever. Most of the time fever is 37.2C, and this fever never go away. This symptom start after that sex. Also after that sex i had headache and sore throat but those symptoms disappeared. And before sex I had diarrhea and I still have it. 

Negative means negative!! 

Stop dwelling on it and stressing yourself out! 

If you already tested negative then it is very unlikely that you do.  It is recommended retesting at 12 weeks for a conclusive result.   But honestly many many things cause those symptoms