Has your baby had Roseola?

I took my baby to her pediatrician, and it looks like it's Roseola but that there's no test because it's viral. I'm pretty upset if it's that, but the dr said it's fairly common. So that's the only relief I get.

Main symptoms of Roseola include a high fever, and when the fever subsides a red spotty looking rash usually appears. It's usually not serious, but is most common from age 6 months to 2 years.

I'm upset because Roseola is from a herpes strain, type 6 or sometimes 7.