How big is a 20-week fetus in terms of conventional size?

Patient's question:

No

Doctor's answer:

Generally, at 20 weeks of pregnancy, fetal development is relatively stable, and the skin begins to thicken, developing into four layers. The fetus is about 16-25 cm long and weighs about 250-300 grams. Hair has grown on the baby's head, and teeth are still developing. It is recommended to enhance nutrition and ensure regular prenatal check-ups.