The fetus is about 1 inch long. Its nostrils, mouth, lips, teeth buds and eyelids form and fingers and toes are almost complete. Now all organs are present, although immature. At the end of the month the embryo becomes a fetus. The mother's breasts become firmer and fuller, may ache. Nausea, fatigue and frequent urination may continue. Her abdomen becomes slightly larger and the uterus is about the size of an orange. She may gain 2-4 pounds.