Pregnant women can take Calcium D3 carbonate tablets. This kind of calcium supplements not only can supplement calcium, but also contains vitamin D3, which can promote calcium absorption, calcium supplementation effect is better. It is recommended that it is better to take calcium supplements after 4-6 months of pregnancy. Do not take calcium supplements too early to avoid hardening of the fetal skull, which may lead to difficult labor during delivery. In early pregnancy, the fetus is relatively small and does not need too much calcium. Pregnant women can absorb calcium from food for the needs of mother and baby’s body, and they can eat more calcium-rich foods, such as soy foods, milk, fish, shrimp, shrimp, seafood, eggs, mushrooms and other foods. At the same time, you need to sunbathe more, which is conducive to promoting calcium absorption. In the middle and late stages of pregnancy, due to the rapid development of the fetus, the need for calcium is more, if the pregnant woman has symptoms of calcium deficiency, under the guidance of the doctor to take calcium medication to treat the symptoms.