Anytime you have unprotected intercourse, there is the risk of pregnancy. However, the risk can increase or decrease, depending on where you’re at in your menstrual cycle.
A menstrual cycle is calculated from the first day (beginning day) of one period to the first day of the next period. A normal cycle can be anywhere from 21 to 32 days. This means that there can be as little as 21 days or as many as 32 days between periods, and still be within the normal range.
If you have a normal 28 day menstrual cycle, ovulation usually occurs (on average) around days 12-15. This would be the most fertile time of your cycle and when the risk of pregnancy would be greatest. The days just prior to and the days of your period are usually your least fertile time and when pregnancy would be less likely. If your cycles are shorter, longer or irregular, then your ovulation time would be likewise: sooner, later or variable. The more frequently you have unprotected sex, the more likely you are to become pregnant.
If you are more than 1 week late for your next period, do a pregnancy test. In the meantime, if you are not planning a pregnancy, do not have unprotected sex. When used correctly, condoms are effective at preventing pregnancy. Consider beginning a reliable, long term birth control method like the birth control pills, patch, ring or the DepoProvera injection. Family Planning Plus clinics offer exams and birth control at little to no cost, depending on your household size & income. Free STD screenings are also available.
12. February 2012
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