I reviewed our earlier exchange and will paste in the relevant part of my response rather than repeat it. -
As for your lymph nodes, there are many other illnesses which can cause lymph node swelling. Swollen lymph nodes are a non-specific response to any number of stimuli including infections due to bacteria and viruses, allergic reactions and autoimmune disease. Of all persons with swollen lymph nodes only a tiny proportion of them have HIV. In addition, swollen lymph nodes such as the ones you have noted in your groin can persist long after the infection has resolved. I would urge you not to worry. If you are concerned about swollen lymph nodes, the proper place to get evaluated is with a good internal medicine physician.
Adding to that and considering your negative tests, I am confident that the development of additional lymph nodes is due to something other than HIV. The list of what might be causing this is huge and, again as I said above, best dealt with in a direct exchange with your own health care provider. It is normal for a lymph node to be tender, particularly if it is being traumatized by repeated examination.
As for the ARS, the A stands for acute. this syndrome which is rare and occurs in substantially less than half of persons who get HIV, typically occurs about 2-3 weeks following exposure.
I really think it is time to think about something other than HIV as the cause of your lymph node swelling. EWH