Police say the mother, her son and daughter were crossing Godwin Avenue when two of them were struck by a car turning onto the street. The daughter, who was being pushed in a stroller was not injured.
The boy suffered an injured right foot, and the pregnant woman, who complained of pain were taken to an area hospital.
The car that struck them remained on the scene, and the accident is under investigation.
Police say the driver did not see the three crossing the street.
They remind motorists that the law is cars are supposed to stop for pedestrians in crosswalks.