A uterine pregnancy occurs when an egg implants and begins to develop within the uterus, where it should be. Pregnancy can only develop and progress to full term within the uterus. When an ultrasound shows an intrauterine pregnancy, it means the pregnancy is developing in the right place. The development of pregnancy anywhere else in the female reproductive tract (cervix, ovary, fallopian tubes) is referred to as ectopic. Ectopic pregnancies are not viable, meaning they cannot give birth to a child. It is important to investigate any possible concerns in early pregnancy, including abdominal or pelvic pain, and vaginal bleeding, so that the pregnancy can be located and complications excluded.