The composition of each herbal medicine varies, and there is no certainty about the effect of many ingredients on the fetus. As for the herbal medicines drunk before pregnancy, there is no obvious effect on the development of the fetus for sure. Based on some cases of spontaneous miscarriage in the first 3 months of pregnancy, you can retrospectively analyze whether you have taken any drugs that are toxic to the embryo or follicle before conception. If you are confirmed to be at the stage of pregnancy preparation in the first trimester and you want to take these herbs, you should communicate with your doctor and inform him/her that you are at the stage of pregnancy preparation so that he/she can selectively and purposefully avoid toxic herbs.