I took AD's during pregnancies with my 2nd and 3rd children. It was totally necessary as I was suicidal and was certain that my family was better off without me. Horrible mood swings.

Congratulations on your pregnancy! Blessings and best wishes for working through this question. Motherisk through the Hospital For Sick Children in Ontario has a hotline you can call to get up-to-date research on different medications and pregnancy/breastfeeding.
The Hospital for Sick Children - Motherisk