Hi
Thought I would post to tell you a bit about what I'm experiencing (almost identical to your experiences!) and how I'm now feeling better.

About six weeks ago I went on holiday to Egypt, and got some kind of bug that left me feeling really ill. Since returning home I have had nausea that literally could stop me in my tracks. I constantly felt like that horrible feeling when you've drunk too much! Along with this I had chest pain, arm pain, stomach pain, neck pain and general feelings of unwell. I have seen four doctors (one at the hospital, because one night I couldn't bear it anymore) and all my tests have come back clear. No virus, no infection, no cancer, nothing. Sometimes I had these symptoms without any panic at all, I just felt ILL and the only anxiety I got was from just being fed up. I left my part time job because of this...I'm really happy at the moment, nothing is stressing me out so I couldn't believe it was anxiety.

Like you, when I'm at uni or the moment I have a beer in my hand I feel better! Almost normal! It got to the point where I had forgotten what it's like to live without feeling nauseas.
Sometimes I got so ill I could barely lift my head up, and had to sleep with a bucket next to my bed but no vomit. I was shaking and I felt like my body was sometimes moving involuntarily. All very scary!

This IS anxiety as you know. My doctor told me there's one part of the brain that sends these signals because something (a small trigger) makes it think you're ill. And you panic and make your symptoms worse. So basically my body recovered from the virus I got in Egypt but my brain hasn't. My doctor told me that if they put me in an MRI scanner it would show this part of the brain over reacting. Being nauseas and then getting stressed over it obviously is gonna then make you tired, and fatigued and you could start experiencing a whole load of symptoms.

Make sure you go to the doctors and get checked for eeeeverything. That for a start will put your mind at rest. Then it's up to you! Tell yourself you're healthy and well. Go out of the house and do things despite the nausea, maybe try some different things and just try to be happy. It's hard to give advice but I'm telling you this won't last forever. Get up, eat healthy and do exercise. Trick your body into realizing that you're okay and there's no need to be nauseas - healthy body, healthy mind. If you put walls up ie not eating you're brain will start relating that to the nausea and it's a viscious circle.

Go see you're doctor and double check with them you're fine. Everytime you get the nausea remind yourself you havent been sick yet, so why would you now? Kick you're brains ass and don't let it take over your life.

Best wishes!!