Hi and welcome to the site.
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:
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.