Ideally, I would talk to the pdoc asap to maybe tweak your meds to try prevent this from happening again. I don't know what you're on, but for me, SSRI's really add to my psychotic features.

As for going to the hospital, the only times I was taken in an ambulance have been when I was section 12'd or unconscious. I don't remember either. When I've gone in under psych advice, I took myself in, had a loved one drive me and just presented at the er -- no big dramatics involved. The crisis team at the hospital then assessed me and then the mountains of paperwork completed and I get walked up to the unit.