Febrile seizure-support/peace of mind

I’m just looking for some support, please no negative stories or comments. My anxiety is through the roof still.

Last night while going to bed, my son had a seizure. He is 22 months old, never had one before. I don’t want to go into details because it was horrifying. We called an ambulance and went to the hospital. He had a fever of 102.7 and we had given him Tylenol about an hour before the seizure. Turns out he had a febrile seizure. We went home last night and he’s acting normal today. I’m just scared. Does anyone have any experience with this who is able to give me some peace of mind?