Sick toddler

My daughter is turning 2 in August and she’s super sick. Her fever was 104 yesterday so we took her to the ER and traumatized both of us with a rectal thermometer, chest x-Ray, strep swab and catheter. She peed right before we went to the hospital and wasn’t drinking much so they had to insert the catheter three times and still couldn’t get enough to do the docs test. After all the tests the only thing they said was it was probably something viral. She keeps pointing at her mouth and saying ouch or crying but she won’t let me look inside. She points at her nose too and won’t stop rubbing it. She’s losing her voice and it sounds all raspy, her nose is runny sometimes and then clogged the next. She has red chapped lip and an occasional wet cough. She won’t eat or drink anything! She is super fussy and crying a lot. She won’t go to her dad, grandma, grandpa, uncle or aunty, she only wants her mama. She looks miserable, I’m so worried. What do I do?