Can a person have HIV despite negative tests post-150 days?

Hello doctor,

I had an unprotected sexual contact with a commercial sex worker some six months ago. I do not know the health status of that lady. After 30 days of exposure, I got a fever and body pain, and I went to the hospital for treatment. He suggested checking a Widal test and a urine test. The results came as typhoid, and I had taken medicines for that too, and for stomach pain.

I have taken three courses of antibiotics. The stomach upset was the main problem at that time. I am normal now. After one month, I had white plaques like formations on the tongue and one side of the tongue also slightly changed. I consulted a dentist, and he told me the tongue was normal.

I went for HIV tests as below:

1. HIV rapid test after 40 days - negative.
2. HIV Combo test after 70 days - negative.
3. HIV CD4 test after 70 days - normal.
4. HIV Duo test after 84 days - negative.
5. HIV rapid test after 88 days - negative.
6. STD (sexually transmitted disease) full test after 88 days - all negative.
7. HIV ELISA test after 110 days - negative unit as 0.06.
8. HIV ELISA test after 155 days - negative unit as 0.07.

My doubt is that I have many symptoms like a sore throat with red patches, white tongue, body aches, muscle aches, and white dots on the head like itching. I sometimes have a burning sensation. These symptoms have been there for three months. I am wondering if it could be due to the exposure. Mostly, I have consulted with a general physician for muscle aches and body aches. I feel like my neck muscles have reduced a little bit. My doubt is whether I have been infected with HIV? My recent test is an HIV antibody test at 155 days from my negative exposure.

Please suggest.