The medication Celexa (citalopram) is generally considered safe to use during pregnancy, as the benefits often outweigh the risks. Studies have shown that the risk to the baby is minimal, with only a slight increase compared to the baseline risk. It is important to have regular medical check-ups during pregnancy while taking Celexa. As for shortness of breath, it could be caused by anxiety, which Celexa is not necessarily meant to address the root cause of, but rather to help manage it. If you are experiencing more good days than bad days, the treatment is likely effective. If you have any further questions or concerns, do not hesitate to ask.