I am pregnant and need to take medication prescribed by another doctor. Is this safe during pregnancy?

Some medications for ongoing medical problems need to be taken throughout pregnancy in order to keep those problems under control. No one can guarantee the safety of any medication during pregnancy, so we have to weigh the risk of taking the medication against the benefit. In general, during the first three months, only medications essential for your health should be taken because this is when the baby’s organ systems are forming and any birth defect potential would be maximal. After that there is less risk to the baby, except for a smaller group of drugs. It is never a good idea to stop any prescribed medication without first discussing it with your doctor.