N.B.
It's completely normal for a little one this age to want to be held the entire time they don't feel good. Please take her to the ER if you are truly this concerned.
You don't say how high the fever is. If it's running 100 and below that's not much of a concern to me. If it's running 103 and higher all the time then yes, I would take her to the ER and beg then to help.
If she's been and taking antibiotics then they are not likely the right ones. If it's viral then antibiotics might not help anyway.
If she has an ear infection ask them if they think it could be Pseudomonas in her ears. My granddaughter had that and there's only one antibiotic that kills that bug and gets it gone.