How big is a 4-month-old fetus developing?

Patient's question:

No

Doctor's answer:

At 4 months pregnant (16 weeks), you have entered the second trimester of pregnancy. At this stage, the baby's eyes, ears, and nose are fully formed. The placenta has also matured, and the mother and baby are now closely connected. The high-risk period for miscarriage is essentially over, and the period from this month to July is the most stable.