Like the comment above some anti depressants suit some people and not others. If you can cope with it, give the Zoloft time to get into your system, as you will feel worse before you feel better. As you know it can take up to 6-8 weeks before anti depressants make us feel better. If you really cannot tolerate the side effects, then talk to your doctor.
I did well on Zoloft, but Prozac was really bad for me with bad side effects. I have side effects with others too.
The side effects going onto a new medication will decrease over the weeks, but like you say, not easy when you have to go to work. You are on a low dose at the moment, so see if you can tolerate it a while longer.
Difficult for you, I know.
There is a certain class of medicines that will always be wrong for some people. For example I can not take Paxil or Zoloft. If you discuss this with your Pdoc they'll put you on a different class of drug.
I tolerate Wellbutrin and Cymbalta.
For anxiety I can take Ativan or Valium.