Hi, there! Welcome to the forum! There are a lot of great people and resources out here.
First of all, I'm on day 100 ish on zoloft for anxiety. I can tell you on day 6-8, I was VERY jittery, feeling like I was going to come out of my skin. I kept in touch with my doctor, and found this forum. This is a very common side effect of zoloft. The crummy part is we just have to ride it out. The good news is, it DOES get better. I found it helpful to track my symptoms on a spreadsheet - this helps me see my progress, and I don't have to try and remember details when I'm catching up with my dr.
I know - I KNOW - it's hard when what we're doing to feel better doesn't kick in right away. But hang in there - better days are coming!
They told me to take it in the morning but now they told me to take it two hours before I go to bed with the trazodone. Hopefully thinking that it'll balance out the restlessness.
You mentioned you are not taking Zoloft when they suggested you take it, however I am not sure what your go forward plan is. Are you taking the traz? Are you planning to switch Zol to their times?
I imagine you will get some other responses here and feel free to keep posting on your thread here, but in the meantime you might find this one provides some helpful background to read since it has some of the same problem.
http://www.medhelp.org/posts/Anxiety/Started-Zoloft-50mg-last-night-woke-up-jittery-/show/2083162