I am a male in my mid 20s. I recently gotten strep throat about 6 days ago (tested positive on a rapid strep A test). I presented with inflamed tonsils and pus exudate on the tonsils as well, but I did not have a fever probably because I went to the doctor very early in the infection. I was treated with Azithromycin (typical z-pack) due to a possible penicillin allergy last week and had completed that course of therapy on friday. I had been feeling improvement up until thursday when there was pain upon swallowing on the right side of my tonsil and it didn't seem to improve. So on Saturday, I went to the ER because I wanted to make sure I was not developing a peritonsillar abscess. The doctors stated that it did not appear that an abscess formed at the time but they did a second rapid test and that was still positive for Group A Strep even after finishing my azithromycin course on day 5. So I was put on a new regimen of oral clindamycin and a single IV dose of Dexamethasone, plus 600 mg of Ibuprofen for pain. Currently, the pain in my neck has not subsided (varies from a 2/10 to sometimes a 7/10), but I have been able to pinpoint that it seems to be a lymph node below my jaw rather than in the tonsil itself. It is painful to the touch and if I move my head in certain ways. It is also worse at night to the point I have been woken up from the pain.
I am concerned that either the strep is not being resolved in the lymph node in my neck or that there is some co-infection of something else that may be a cause but I cannot know. Is this a normal thing that happens in strep throat? Do I actually have an abscess that is not actually visualized in the throat or is this just a lymph node that needs to resolve on it's own and I'm just being impatient? Keep in mind that this all started only a week ago on tuesday.
Thanks in advance!