Fever of 103

When to call pediatrician back? My daughter who is gonna be two next month has been running a fever since Monday night, she’s been taking Motrin and it brings it down but spikes back up to 102.5 all day yesterday, well she woke up just a crying this morning and she was burning up so I checked her temp and it’s 103. She has no other symptoms and also she didn’t pee since we changed her for bed(11pm since she didn’t want to go to bed last night)