Hello, Thanks for posting, According to the manufacturers of xanax (alprazolam), it is classified under pregnancy category D, which means that it should be used only in LIFE-THREATENING emergencies when no safer drug is available. There is positive evidence of human fetal risk. Now given this warning, I will immediately say that you should use xanax while having in mind that there is a possibility of fetal risk. In the other hand, your doctors might just be making a better decision for you by asking you to continue xanax while being pregnant. Also, take note that, severe anxiety attack can also be a risk to pregnancy especially when early (spontaneous abortion is possible). In the other hand, xanax would not lead to a miscarriage but severe attacks can lead to involuntary uterine contractions, that can lead to a miscarriage. Try meditations techniques and yoga to relax you and avoid all triggers of your anxiety. Anything you know that can trigger your attacks, just avoid (which means you might need to be at home most of the time until your pregnancy can advance). If you stayed off xanax and able to cope with the attacks, then that will be a better way to go. Try following your doctors advise. Hope this helps