Yes, it is! Watercress comes loaded with a whole lot of nutrients and vitamins that are great for mothers-to-be and their developing baby. Folate in watercress helps keep away neural tube birth defects such as spina bifida in the baby and acts as an anti-depressant for expecting mothers. Additionally, watercress is also a good source of calcium and Vitamin C, known for boosting immunity and bone health respectively.
However, you must wash your watercress thoroughly before consumption, to get rid of any bacteria.
NHS, UK recommends watercress as a good source of calcium during pregnancy.
In some cultures, watercress is believed to cause abortion, however, this is not medically proven.
United Kingdom National Health Service