Simple febrile seizures on a 1 year old?

So today I got the scare of my life! My 1 year old got his first febrile seizure today and Ive never experienced this with any of my 4 kids so I was really scared, freaking out I felt like running outside with my baby in my arms to ask for help but good thing the ambulance came before that and as soon as they got here he stopped having the seizure. He got another one later in the night and again I was scared and crying, I’m 27 weeks pregnant so I’m very emotional right now. Any moms that have a child who experienced this can you guys give me some tips how to remain calm, what can I do while he’s having a seizure any tips help to stay calm I’ve been so emotional today 😔 I now know it’s common but I never thought it would happen to us