Running is not recommended in early pregnancy, but you can walk appropriately.
Early pregnancy, that is, the first three months of pregnancy, when the growth and development of the fetus in the uterus is usually still unstable, strenuous exercise may induce contractions, which may easily lead to miscarriage, so it is not recommended to run, but you can take a moderate amount of walks, in order to help breathe fresh air, enhance physical strength.
In early pregnancy, it is recommended that pregnant women rest appropriately and avoid exertion, so as not to affect the development of the fetus. In mid-pregnancy, i.e., 4 to 6 months pregnant, you can, according to your own situation, carry out some sports, such as yoga for pregnant women, gymnastics for pregnant women, swimming, etc.. Strenuous activities are also not recommended in late pregnancy, because at this time the fetus has basically matured, strenuous activities may induce preterm labor.
During pregnancy, you should have regular checkups to determine the health status of the mother as well as the fetus, and go to the hospital in time if you experience any discomfort.