Tightness in Throat Symptom

Hi, I have been sick a lot lately. maybe it is related to sinus infection, that I had a few weeks ago. My tonsils were swollen, and I had troubles in speaking, swallowing. Finally, I've developed a tightness in my throat. It is unpleasant, as it seems like there is something pressing against my throat when I swallow and talk. Maybe, it is some allergic reaction to any allergen, that I didn’t have before. My doctor couldn’t find the reason for this disorder.

I have also had this feeling, since about October, where my throat feels like someone has a tight grip around it. i don't have trouble swallowing or breathing, but it's very uncomfortable. I read somewhere that this might be a thyroid problem and that most people have this symptom only at night, but i have been having it at random times throughout the day. it seems to be getting worse by the week, and i'm not sure if its because i'm so stressed out about what the problem could be that its making my throat feel tighter. I'm really concerned that this could be an AIDS related symptom because i had unprotected sex not long before the symptoms started to occur. I was tested for HIV back in december and the results were negative, but i still had this symptom. My OB/GYN told me to be tested again and i'm still waiting on the results. I'm so afraid and not sure what to do and the suspense is killing me. Also, I believe that my family has a history of thyroid problems, so it might be attributed to that but i'm not sure. Has anyone had the same problem or am i going crazy?