Any advice from the cat people?

JuneBug appeared to have a seizure. :Before it happened, she was trying to vomit but only a little foam came up and then before she could duck under the couch, she collapsed on her side between a table and couch and seemed only semi-conscious. She came out of it less than a minute later and went under the couch where she was awake but wide-eyed.

She seems fine, if a little shell shocked now. This hasn't ever happened before that I know of so I've made an appointment to get her checked out this Thursday, though if it happens again I'll have to find a 24hr vet.