I agree with Ruby 2. Going into work is more likely to cause problems that solve them at this point. Phone in sick. If you have to tell them what's wrong with you you can describe the nausia, sweats and shakes. They'll probably surmise you have flu or something and you will have still been honest. If you're off work maybe you can call the docs again and see if they have a cancellation and can see you earlier. Tell them it's an emergency. It is.
Wishing you hope and strength.