After reading the posts here, I'm getting kind of scared

I am about to take Zoloft for the first time (never took an antidepressant before; only Xanax), and to hear so many people mention nausea as a side effect is not what I want to hear. My friend who started Zoloft about a month ago also said that she experienced nausea the first week.
I DON'T THINK I CAN HANDLE A WEEK OF FEELING NAUSEOUS.

I was prescribed Zoloft 50mg for panic disorder. Whenever I get panic attacks, I feel nauseous. For me, it's about the worst feeling in the world. Oh, and by the way, I DON'T EAT WHEN I'M STRESSED/ANXIOUS. To read that some of you have lost your appetite on Zoloft also scares me. I know that drugs affect people differently, and that I could be one of the lucky ones who doesn't really suffer many side effects from this, but I am not looking forward to the potentially unpleasant feeling of taking this drug.