My daughter is 8 months old

She has an ear infection so they prescribed her an antibiotic, and started Tuesday, she had a rash on her parts, but seems to have gotten worse with the amoxicillin. She took a cat nap at 7:30-8 and lasted maybe 10-15 mins max and was up, I took her to bed around 9:30 and she hasn’t not been to sleep since it’s 4:00 AM here now.

I have no idea what to do, she’s been screaming, in pain I don’t know if it’s from a rash, her teeth or what. What do I do? We’ve given her Tylenol, ibroprofen. She is so so tired, but as soon as she dozes off, she wakes right back up screaming. Help :(