|4. The Habit: Missing Your Birth Control Pills|
Missing one or two birth control pills is not a reason to panic. "Theoretically, the pill should be effective if you miss up to two days," says Dr. Clayton. The pill works by keeping estrogen levels steady so you don't ovulate. "Missing one or two pills doesn't give your body enough time to reduce the levels of estrogen enough to release an egg."
Damage control: If you skip two pills, take three on the third day. But two days is the limit as long as you've been taking your pills regularly for the rest of the month, says Dr. Clayton. If you miss any more, you should use backup birth control, such as condoms.
SEX SURVEY: Is Your Sex Life Normal?