As gilz suggests you could simply be feeling overwhelmed with the whole thing, i have moments when it hits me, and im sure there will be many more.
As for feeling sick, i can understand you not wanting to eat, me more than anyone. but at the same time, if you can keep something in your stomach all the time, just light dry snacks, it should stop you from feeling so ill.
I know how you feel about people seeing you as some 'pregnant person' all the time, that is something that i dont want, and it will piss me off, we're human too. x