Sick baby!

Any moms on here ever experienced their child having Roseola?? My daughter had a 103.5 temp Thursday and Friday. Took her to pediatrician and she said it’s something viral. Her flu test was negative. Only other symptom was a little diarrhea. Her fever has been gone since yesterday but she now has a rash all over her stomach and chest. I googled and Roseola is what came up. I’m calling her ped in the morning, but just wondering if any other moms experiences these symptoms and it was in fact Roseola?