I understand that Blessing forms part of the (US) Book of Blessings which is approved for interim use in England and Wales – thus the Rite of Blessing of a Child in the Womb may be used here.
According to the United States Conference of Catholic Bishops (USCCB)website, Archbishop Gregory M. Aymond, chairman of the Committee on Divine Worship of the U.S. Conference of Catholic Bishops (USCCB) says:
“We hope the use of this blessing will provide not only support and God’s blessing for expectant parents and their child in the womb, but also another effective witness to the sanctity of human life from the first moment of conception”.
The blessing can be offered within the context of the Mass as well as outside of Mass.
The text can be downloaded at www.usccb.org/about/pro-life-activities/prayers/pro-life-blessings.cfm. The blessing may be ordered through USCCB Publishing as a 43-page bi-lingual booklet atwww.usccbpublishing.org/productdetails.cfm?sku=7-316.