Leg cramps in the seventh month of pregnancy are a sign of calcium deficiency. Generally in the middle of pregnancy the baby grows faster, the nutrients needed are more, if this time the lack of calcium is easy to lead to the phenomenon of leg cramps. Pregnant women should supplement calcium in time, if the calcium content is not enough to supplement, the baby will absorb the mother’s calcium from the mother’s body, so this time should be supplemented in time. You can drink calcium gluconate or eat more seafood, you can eat kelp, nori, shrimp, these foods are very high in calcium content, and can supplement the calcium content needed for the growth of the baby. In addition during this period should also pay attention to more sunshine, to promote the absorption of calcium.