Welcome to our Forum. Dr. Handsfield and I share the forum. You got me. FYI, the reason we share the forum is because we have worked together for nearly 30 years and while our verbiage styles vary, we have never disagreed on management strategies or advice to clients.
Your exposure was relatively low risk. HIV rates among Thai CSWs are relatively low compared to other Southeast Asian nations due to the great success Thailand has had in reducing its overall HIV rates. That however, of course, does not make this a no risk exposure. So, with this as background, lets work through your questions.
1. Yes, the risk would remain between 1 in 1000 and 1 in 2000. Fatigue and alcohol do not increase susceptibility.
2. Higher class escorts tend to have lower rates. Just how low is difficult to say.
3. Isolated sore throat is not a sign of HIV or the ARS. Worrying about symptoms however is a waste of time since many people do not develop symptoms and since the symptoms when they do occur are so non-specific that they are mimicked by the symptoms of the far, far more common viral illnesses (influenza, other community acquired viral illnesses) that most people acquire with regularity.
4. No, HIV takes years to progress to AIDS. See number 3 above about your sore throat. Further, I would add that anxiety and reflux ("heartburn") can cause residual sore throat.
5. Miniscule. In part because your risk of infection is so low.
6. Virtually zero.
Your fear of the result is no reason not to test. Testing does not give a person HIV but it does give them the power to know what is going on and whether or not they have the infection. Most tests are negative as I am confident yours will be and if you were so unfortunate as to have HIV, the test would allow you to seek treatment sooner. There is no reason to delay or avoid HIV testing.
I hope you find these comments helpful. EWH