Have you thought about getting some meds from your GP? There is some good stuff around nowadays which won't harm the baby. I took several things to try and help with the nausea, which I had till about 18-20weeks this time (yuk)
Try most of all to stay hydrated, I found something very helpful was home made milkshakes with lots of ice, I lived on these for hours sometimes, and always felt way better after (almost able to eat again) - fluid levels are very important and I'm rubbish at drinking even when i don't feel sick! But seeing as the milk has lots of nourishment, it takes the pressure off and helps your blood sugar too (common reason for everything seeming awful, when you haven't had enough calories).
My Dr. said she had craved milk so it must be Ok!!
But seriously, ask for something to help, there's Phenergan, Cyclizine, Stemitil, all sorts of stuff to try, stronger ones if it's not working.
My heart goes out to you, but I think there's still hope at this stage, really I do. You might be fine in a couple of weeks!
(aaaahhh Bliss)