During pregnancy, if a pregnant woman is deficient in calcium, it can have an effect on the fetus. If calcium is deficient, it can lead to slow growth, short stature and delayed development of the fetus. Because calcium promotes the development of bones, if calcium is deficient, it will affect the health of the baby’s body. If a pregnant woman does not take calcium supplements during pregnancy, the fetus will absorb calcium from the pregnant woman’s body, resulting in calcium deficiency symptoms, which can cause leg cramps, muscle aches or joint pains. In this case, the pregnant woman should promptly give calcium supplements, you can take calcium tablets for pregnant women or take calcium gluconate. You can also eat foods with high calcium content, such as seafood, seaweed, seaweed, shrimp, or boil bone broth in moderation, which is rich in calcium.