Hi and welcome to the site. Acitrom and similar medications are considered Category X by the United States Food & Drug Administration. This is the organization responsible for safety of medications in the US. Category X means that there are very serious concerns with use during pregnancy. The types of effects on the baby are similar to those described in this link: http://memo.cgu.edu.tw/cgmj/2709/270908.pdf It is recommended that a woman on this medication be taken off by the 6th week of pregnancy. Instead heparin is recommended. I m sorry that you have found yourself in this very difficult situation. I hope it goes as well as possible for you.