You want to talk to your doctor about the ramifications of taking your meds for depression
while pregnant. Certain drugs can be harmful
for the baby, but if you feel you need something, I'm sure you and your doctor can find a medication that's not known to be harmful.
As far as what is best for the baby, you want to at least breastfeed at first. It is better for them due to the things in first milk, but it's up to you.