((la doctora)) - I'm sorry you're struggling so much right now. When I was younger I used to be very shy with social anxiety. In my 20's I learned to manage it and my confidence improved. It's not completely gone but it's much better. When I was in my 20's I had a job where I started to dread going, so I know the feeling. Unfortunately the longer you stay out, the harder it gets to go back.

Is there a superior you could talk to about problems at work or are they part of the problem too? Would being assertive to their comments help or make it worse? Do you have a family doctor who could give you something to get over this hurdle and are you on psych meds ATM? I've never heard of Cyclic Vomiting before - what causes it? I found this support group and I hope you feel better soon.

http://www.cvsaonline.org/

Some people have found this supplement helps(GABA) but do consult with your doctor first and buy from a reputable health food store:
http://www.gabasupplement.com/