You poor thing, I was sick morning, noon and night with my first and I too was miserable, I wondered what on earth I'd let myself in for. Mine seemed to be a lot of acid, it would build up in my stomach so when I did try to eat it was so irritated nothing would stay down. My Doc said I could use over the counter Zantac and it did the trick in no time, no more sickness at all. I don't know if your symtoms are the same but if they are then give it a try or talk to your Doc about it. They should be able to do something to help you. Out of interest can you stay on Zoloft right through the 3rd trimester. I too have suffered from depression since the birth of my son,I take Effexor, we would like to have another child but I'm not sure I want to put my family or myself through me off the meds. I did take Zoloft originally so if I could take that during the pregnancy it would help. I also take meds for high blood pressure and I'm 36 so a high risk pregnancy all together.
Take care and I hope the sickess passes soon or someone you are able to get some relief:-) stay strong.
J.