Most ectopic pregnancies are found in the first 5 to 10 weeks of pregnancy. In an ectopic pregnancy, the fertilized egg cannot easily pass through the Fallopian tube to the uterus because the tube is damaged, scarred or distorted. The egg implants itself outside the uterus--usually in a Fallopian tube. An ectopic pregnancy cannot continue to birth and, if undetected, can cause life-threatening hemorrhaging.

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