Teen pregnancy, periods

Patient

Q: How long should you wait to take a pregnancy test because i am exactly 30 days late

Doctor

A:   An unprotected intercourse results in pregnancy only when a woman is in her so called "Fertile Period". The fertile period of a woman is determined by analyzing her menstrual cycle with an ovulation calculator or fertility chart. Normally, the menstrual cycle is a 28 day cycle. During the 14th day after a period, the ovum is released. This process is called ovulation and the days 12 to 16 days after a period are said to be a woman’s most fertile period. Ovulation may not occur at a predictable time in the menstrual cycle, however. A number of factors may cause an unexpectedly early or late ovulation, even for women with a history of regular menstrual cycles.

A pregnancy test attempts to determine whether a woman is pregnant. Markers that indicate pregnancy are found in urine and blood, and pregnancy tests require sampling one of these substances. Most chemical tests for pregnancy look for the presence of the beta subunit of hCG, or human chorionic gonadotropin, in the blood or urine. hCG can be detected in urine or blood after implantation, which occurs six to twelve days after fertilization, and hence pregnancy test may show positive by this time.

Delayed periods may be caused by many gynecological problems, including the ones that cause hormonal imbalance in the body, namely, polycystic ovaries, or thyroid problems. Please consult your doctor for advice.

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