It is important to initiate a folic acid vitamin several months before conception if you are planning a pregnancy. It is also important to discuss with your doctor the medications you are currently taking and their compatibility with pregnancy. Some fertility medications may not have strong evidence of effectiveness, so it is important to consult with a healthcare provider before taking them. It is recommended to avoid using certain herbal supplements like vitex and myo-inositol during pregnancy due to lack of research on their safety.