How big is a fetus at 40 days of pregnancy

Patient's question:

No

Doctor's answer:

After the egg is released, it combines with sperm in the fallopian tube to form a zygote. Three days later, it reaches the uterus and implants there, a process called implantation.
First Month: After implantation, the zygote begins to develop gradually into an embryo, which then becomes a fetus. The size of the blastocyst is about 1 kilogram.
Second Month: The heart, medulla oblongata, brain, ears, nose, eyes, and gastrointestinal tract begin to form gradually. The heart starts beating, and the blastocyst weighs about 4-5 kilograms. The surrounding villous tissue gradually develops to form the placenta.