Advice please!!!

I really need input and comments from you moms if you have gone through the same thing with your child so I can stop crying myself to sleep! My daughter who is going to be 2 years old this month has had a fever of 104 since Wednesday of last week. I’ve been able to get it down with ibuprofen but it always spikes back up. Took her to the ER on Saturday. She has an ear ache in her right ear and a slight UTI. She started an antibiotic yesterday and is taking ibuprofen. (She is also teething and getting her last couple teeth during all of this) Well I thought after giving her the antibiotic her fever would definitely calm down. Nope. She just woke up an hour ago burning up and shaking with her fever back at 104. I gave her ibuprofen and had her chug 2 cups of milk. (She’s been drinking good but is barely eating) I had her stay up with me for about 40 minutes until she stopped with her shakes. I just laid her back down and I’m just scared to fall back asleep. My daughter has never had a high temp like this for this long and it’s just scary to me. I’m doing everything the DR at the ER has told me to do. If I can’t get her into her pediatrician today for a check up I’m probably going to take her back to the ER to be seen because I’m losing my mind! I cannot stand to see her like this, just breaks my heart.