Dear doctor. I had unprotected sex with my boyfriend and was on my periods. After 3weeks I started feeling light headed and headache and also felt pain in my Arms and burning sensations in my lymph nods of armpits and knees. I did a hiv antibody test where they took blood from my arm. The hiv test was done after 5 weeks of exposure and was negative. But I still have the symptoms and I am very worried. Can u help me out? What should I do now ? Is my test result accurate at 5 weeks??