How big should a fetus be at twelve weeks of pregnancy

Patient's question:

I got married last year. Recently, I've been experiencing lower abdominal pain, especially during my period. I'm very worried about it affecting my fertility, and I'm also extremely sensitive to cold and coldness. Could you please tell me how big the fetus should be at 12 weeks of pregnancy?

Doctor's answer:

Hello, the early stage of pregnancy is about to end this week. Over the past three months, the fetus has undergone tremendous changes. In just over 70 days, the fetus has taken on a basic human shape. At this stage, the brain volume of the fetus continues to grow, accounting for about half of the entire body.
Every pregnant woman needs to supplement calcium. This is because the calcium required for the formation of the fetus's bones comes entirely from the mother's body. During pregnancy, calcium storage needs to increase by 30g. Relying solely on dietary calcium is not sufficient. Therefore, it is necessary for pregnant women to supplement more calcium during pregnancy.

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