"I do get anxious at times but never like that. I contemplated going to hospital across the street. One minute I was fine doing my work then all of a sudden bam! No idea what happened. Nothing new no one came up on me nothing. Didn't even talk to anyone, had headphones on ignoring everyone and everything.

That's the way my anxiety comes. Out of nowhere, from no one, no triggers. It just hits. My uneducated guess is that you experienced a significant anxiety attack. Let your T know. I take Xanax regularly and I can take another dose on an as needed basis. At first I didn't want to take it at all, but then realized I was only making myself suffer needlessly. Maybe your T can give you something to take if you have another attack.