Hi Ms Jessica,
Thank you for posting your query at DoctorSpring.com.
I have read your symptoms after the fall, and agree with the ER physicians that you have had mild head injury leading to mild concussion.
As of now, you can wait and watch and no CT scan of head is necessary.
The current fever is probably unrelated (most probably due to viral infection), and as you said, you can take symptomatic treatment with tylenol.
Please watch for the following warning signs, such as severe headache, vomiting, double vision, decreased alertness, weakness of arm or legs, fits, etc. If any of these occur, you should get a CT scan of brain done.
I hope it helps. Please get back if you have any follow up queries.
Dr. Sudhir Kumar MD (Medicine), DM (Neurology)
Senior Consultant Neurologist