Fatigue is just a symptom can be due to hundreds of causes. needs complete clinical correlation to find out the cause.

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Brief Answer:
Supportive care

Detailed Answer:
Thank you for getting back to me

As i mentioned earlier, fatigue is just a symptom and there are hundred of thousands of disease almost every one with which it can present. Now your visit to urgent care sorting out throat for strept and ruling out that infection rules out just one possibility of bacterial cause for sore throat, there are many other non bacterial causes of sore throat and engorged tonsils.

I have seen your throat picture and it favours tonsillitis ( as tonsillar pillars are grossly engorged) if you have pain and and difficulty swallowing or it recurs frequently , you should consider tonsillectomy along with supportive care, salt water gargles, use of ibuprofen or some short dose prednisolone, good oral hygiene maintenance , preferably some oral antifungal gels like nystatin drops and see if it helps. negative for strep rules out just bacterial causes of the sore throat. Viral causes, possibility of mono, fungal infections like oral candidiasis still to be suspected.

For better management, visit an otorhinolaryngologist and let them help you in this regard further.

i hope it helps. take good care of yourself and dont forget to close the discussion please.

Regards
Khan

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