Your fetus is now around 2.5-3.0 cm (1.2 inches) long (crown to rump) and weighs about 3-5 grams (approximately 0.25 ounces). All the body parts are now present, and the fetus is kicking and stretching, although you likely won't feel these movements yet. The chances of miscarriage are decreasing significantly at this stage. Fingers and toenails are well separated and continuing to grow. The baby's heartbeat is now strong enough to be heard with a Doppler ultrasound, a sound that is incredibly reassuring and exciting for parents. Major development is nearing completion, and the fetus will now focus on growing bigger and stronger. The diaphragm, the muscle responsible for breathing, begins to expand and contract, preparing the fetus for breathing after birth. Amniotic fluid washes in and out of the lungs, aiding in their development, even though the fetus isn't breathing air yet. The fetus's heart beats twice as fast as yours. The heart has now developed its complete four-chambered structure. A fine layer of skin is forming over the fetus's body, and a specialized layer is developing into finger and toenails. The head is still quite large, nearly half the length of the body, reflecting the rapid brain growth. All organ systems and external structures are now present. The face is becoming well-formed.