Having your masseuse insert her finger into your rectum is absolutely no risk for HIV, even in the VERY unlikely situation that she had HIV. This is masturbation and masturbation is safe sex. There is no reason whatsoever to be tested for this exposure.
As for your symptoms yes, they are consistent with the ARS but they are also consistent with a much, much more likely sort of infection – a community acquired viral syndrome as your doctor has suggested. The symptoms of the ARS are TOTALLY non-specific and when people experience "ARS symptoms" they are much more likely to have something else, usually some other, more typical virus infection. When this has been studied in the US, less than 1% of persons seeking medical care for "ARS symptoms" are found to have HIV, the remainder having symptoms due to other processes. In contrast, over a given year, there is almost no one who has not had a viral illness, night sweats or both (sometimes on multiple occasions). In addition, it is also important to realize that many persons who acquire HIV do not experience the ARS. For a person to try to judge their HIV risk based on "ARS symptoms" is a waste of time.
Once again, no indication for HIV (or any other sort of) testing here. EWH
I forgot to mention that I also have some dry-cough from the last 2 weeks (going away). This is about 12 weeks after the potential exposure