Severe Anxiety

I accepted a new job yesterday and even received my uniform. I woke up today to start my first training shift and I had the worst panic attack of my life. It has lingered all day long and I haven't stopped crying/throwing up since 8am. I called out today Because obviously I couldn't even drive myself there.

My husband has been so supportive all day and he keeps telling me I can go or not go, whatever I want. I just want to feel better.

I wanted this job because it's outside of my comfort zone and seemed really fun, but now I think it's too outside of my comfort zone and I made a mistake. I want to push myself, but with the way I'm feeling right now, I don't even know I'd I'll be able to get out of bed tomorrow. I don't want to feel like that at my job.

I've been suffering with anxiety my entire life, but it has never ever been like this before. I wish I could turn my brain off.

I'm not really sure what I'm looking for, maybe just support from others who have suffered through this. Advice would be great, anything.