Antibiotics may decrease the effectiveness of your birth control pills, so you were right in abstaining from sexual activity during that time. Because we don’t know exactly how much antibiotics interfere with pills, you may not have had adequate protection throughout your period (inactive pill) week. Taking Plan B was a good choice.
Plan B helps prevent pregnancy by delaying ovulation (if it would have occurred) . Because of this, your period may be a little later than ususal. You may experience some irregular spotting or bleeding throughout this next month of pills. Keep in mind that things like stress, illness, medications, and lack of sleep can alter your cycle. Periods could come earlier, later, or sometimes, not at all.
Begin a new pill pack as scheduled. If your period is more than 1 week late, do a pregnancy test.
15. February 2012
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