When do you know it’s time to bring your little one into the ER.

Back story, she’s been in and out of the hospital since she was 2 months old, she’s now 2. She has bad kidneys,seizures,the list goes on. She woke up super congested Sunday night so I brought her in Monday. We usually only see one dr because the others are idiots,and I use that term lightly. Somehow we got stuck with the idiot😡 he ran no test on her despite her history of proving them wrong(she’s has clear urine that tested negative until it was sent off for cultures,she’s had no symptoms and her wbc Be 30,000. Once again the list goes on. He did a WBC and said it was high,she’s lost a lbs (which is normal for her these days) and she had a temp. He gave her a steroid said she looks like she has the flu(no swabs) and sent her home. She ran a temp all night,and threw up when I say threw up that was an understatement. She hasn’t eaten since and has drank very little today. We just checked her temp after rotating fever meds all day and it’s still 101.9. Should I just see if it passes or bring her back in? The higher her temp gets the more likely she will have a seizure. I don’t want to be that mom who brings her kid to the ER with a cold,but this isn’t a cold.