Hello. First of all, Hashimoto's thyroiditis is currently considered as an autoimmune disease, so it is also called autoimmune thyroiditis. This disease is more common in middle-aged women, so it makes some of our female friends pay more attention to this problem! Moreover, the disease tends to develop into hypothyroidism, which is more common in clinic. Under normal circumstances, hypothyroidism does not affect pregnancy, but it is worth reminding everyone that pregnancy can only be achieved if the condition is mild or drug treatment is under control. In addition, after pregnancy, in order to prevent the development of the fetus in the uterus from being disturbed by the external environment, of course, we should also pay special attention to ourselves during pregnancy to avoid being affected by unfavorable factors, including not using various drugs casually during pregnancy. But if you are sick, you still need treatment. In other words, a certain degree of treatment must be announced under the guidance of a doctor! In our life, some people get sick during pregnancy because they are afraid that drugs will affect the fetus, and it is miserable to get sick. In fact, it is often the disease itself that will have an adverse effect on the fetus, not the role of drugs. It has been reported that the incidence of abortion, stillbirth and intrauterine growth retardation caused by untreated pregnancy complicated with hypothyroidism is higher than that of normal pregnancy. But strict monitoring and reasonable treatment will make the prognosis much better.