Our oldest daughter has walking pneumonia - started with a slight cough most of last week then over the weekend the cough got horrible and never ending and she also developed a low fever. Her throat wasn't hurting (other than from the cough), she wasn't congested, she didn't feel tired and groggy, she didn't really lose her appetite, etc. After multiple negative COVID tests we took her into the doctor yesterday morning and got the diagnosis of a seemingly very mild case of pneumonia.
She's on antibiotics now and it seemed to make a difference by the time she went to bed last night and then I didn't hear her coughing all night long like she did the last few nights so hopefully the medicine does what it's supposed to. She's anxious to get back to school tomorrow.
FWIW, she has a close friend with some sort of autoimmune problem who gets sick with absolutely everything. I'm going to blame her anytime my daughter brings home some sort of illness.
On the other hand, I was talking to my neighbor at the gym this morning. He's a doctor who studies respiratory illnesses and weird tropical diseases and he said they've seen a lot of mild cases of pneumonia this fall (relative to most falls) in the reporting he looks at so maybe I shouldn't lay all the blame on that friend from school.