Ella and Pregnancy

Ella and Pregnancy: What Are the Odds?

ella is not 100 percent effective. In fact, it is significantly less effective than many other types of birth control, which is why it should not be used as your main method of birth control.
In one clinical study, 1.9 percent of women who took ella within 72 hours of unprotected sex became pregnant, compared to the predicted pregnancy rate of 5.6 percent if no emergency contraception is used.
It is important to remember that ella could potentially cause miscarriages in pregnancies that are already established. If you are pregnant or suspect you could be pregnant, you should not use ella.

After Ella: Am I Pregnant?

It is important to remember that your period may be different after taking ella. Some women may experience their period earlier or later than expected by a few days. Women taking ella in clinical trials experienced an increase in cycle length by an average of 2.5 days. Some women may also experience spotting (light vaginal bleeding) a few days after taking it.
If your period is more than a week late, you should contact your healthcare provider and consider taking a pregnancy test to make sure you are not pregnant. ella, like other emergency contraceptives, is not 100 percent effective.
Last reviewed by: Kristi Monson, PharmD
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