Fever and worried

Chelsey

My baby is 10.5 months old and has her first fever. Fever started on Wednesday (3 days ago). I’ve taken her to the doctor twice and the only thing they can think of as being wrong at this time is a UTI because she didn’t have any other visible symptoms. They tried getting a sample of urine using a cathedar but that made my baby uncomfortable so I told them to stop. Last night she went to bed with a temp of 99.8 and woke up with a temp of 99.8 in the morning but then woke up later in the day after her afternoon nap with a temp of 101.8. Her temperature is fluctuating. She is acting normal for the most part. Still playful, and happy. Doesn’t seem to be that uncomfortable. Any advice?