The birth control pill has long been the birth control of choice for many women. While the birth control pill is 99% effective when used consistently, its effectiveness significantly drops if you veer from your daily dose.

"The birth control pill is most effective if taken daily at approximately the same time," says Karen Carlson, MD, Nebraska Medicine obstetrician and gynecologist. "If you miss a day or start a pack one day late, there is still time to recover. Take the pill you missed as soon as you remember. It is OK to double up on one day. However, if you miss two or more pills in one pack, you should use a backup form of contraception for seven days."

Dr. Carlson recommends calling your doctor if you are on vacation and forget your birth control pills. They can request that a prescription be sent to a pharmacy near your location.

How does the pill work, and who should take it?

The combination estrogen/progesterone pill is the most common form of birth control pill. This pill gives your body hormones to prevent pregnancy. The hormones prevent your egg from fully developing. They also change the mucus at the cervix to prevent sperm from entering. This birth control combination option is also recommended for women with polycystic ovary syndrome, or PCOS, as it can regulate their menstrual cycle.

You should not take the combination pill if you:

• Suffer migraines, as estrogen can increase their prevalence of migraines
• Are breastfeeding, as it may decrease milk supply
• Are at high risk for blood clots, stroke or high blood pressure, as the estrogen in the combination pill can raise your risk

If you can't take the birth control pill, or the pill isn't working with your lifestyle, consider these other options. 

Determining what type of birth control is right for you is something you should discuss with your doctor, says Dr. Carlson. 

"There are many types of birth control pills, each slightly different," says Dr. Carlson. "Your doctor can help you determine which type is best for you based on your health, medical history, and ability to take birth control effectively."