I have been on both sertraline and citalopram due to bipolar, (not whilst pregnant, I quit) and didn't feel any better from either. They are both common antidepressants, and are normally considered safe during pregnancy. Most medication that is not recommended has a risk that gets lower after first trimester, as your baby has already made those crucial developments Hopefully you got it sorted, just noticed it's an old post! :P
I can only give you my experience, I was on citlopram years before I was pregnant AND during pregnancy. My baby was/is fine and now 10MO For me the risks to myself outweighed the risks to the baby. I guess this is something you can only gauge for your self
You will have seen my other threads re doctor being beyond useless. I was convinced he would prescribe me sertraline seems the most common in pregnancy but he hasn't has anyone been on citalopram while pregnant/breastfeeding it seems to cause probs in late pregnancy im 23 weeks now. I swear i give up!