wow christina that's awesome, congrats!!
i think my emetophobia is definitely caused by a fear of the unknown; it has been a very long time since i was last sick...sometimes i think that if i would just let myself be sick and see it's not so terrible that i would be cured
also, i take zoloft as well, and i find that if i forget to take it i am very very dizzy and nauseous, so that could very well be what caused it!