Fifths Disease or Irritated?

Gabrielle

We had a sleep study done at our local children’s hospital to check for an apnea. Since we’ve left this morning she’s gotten this rash on her face. She had adhesive in other places on her body with zero sign of irritation. It started as a tiny dot on one cheek and is now on both sides of her head, bigger, and gotten pretty red. My little brother had fifth 6 months ago and it looked like this. Do y’all think it’s adhesive or fifths? Just want to get an opinion on if I should call the after hours line at her doctors office since it’s the weekend. She is a premie she’s 8months actual 6.5 adjusted and roughly 15lbs 15 oz.