Birth control pills are up to 99 percent effective at preventing pregnancy, but only when the pills are used consistently and correctly every day. It sounds simple to do, but inevitably you may forget a pill for any number of reasons: vacation, illness, spontaneous romantic voyage with the love of your life (wishful thinking).
When you use birth control pills, create a list with the following information: drug name (brand/generic), type of drug, dosage, strength/amount of active ingredients and usage instructions. Post this list (see example of information to include: personal health record example) on the inside of a medicine cabinet for quick reference, and always have one copy of the “Patient Information Brochure” easily accessible.
Birth control pills range in levels of synthetic estrogen they contain (most commonly prescribed are the "low dose" of 30 mcg estrogen):
What can you do if you miss taking your birth control pills?
For 30–35 µg ethinylestradiol pills (most commonly prescribed):
Missed 1 or 2 active (hormonal) pills or if she starts a pack 1 or 2 days late:
Missed 3 or more active pills, or if started a pack 3 or more days late: