The above list does not always indicate a pregnancy.
Many women have irregular menstrual cycles.
Missed periods are unreliable indicators of pregnancy . If a missed period occurs while a woman is trying to get pregnant, has had unprotected intercourse, or may have experienced contraceptive failure, a pregnancy test may be desired. HCG is a hormone produced by women shortly after conception, which stimulates the production of progesterone. It is secreted into a pregnant woman's blood by the placenta and may be detected 10 days or more after conception. The Beta subunit HCG , a test available at SDSU's Student Health Services, can accurately detect HCG in a woman's blood as early as the eighth day of pregnancy.