my baby has her first fever

My baby has her first fever. The highest it's gotten is 100. She's 11 months. I Called nurses hotline to see if I should take her to ER but they said I can treat her at home with all the info I gave them. I'm just worried.. obviously. She has a terrible cough and everyonce in a while sounds like she's wheezing. Advice please?  I hope she will be ok through the night until I can get her to the dr. Tomorrow. I feel like I'm worrying to much. Lol FTM mom here.