1. Will the pill stop my period? In most cases, no, but it depends what type of pill you take.There are three basic types of birth control pills:• Combination pills, which contain estrogen and progesterone hormones that regulate your menstrual cycle so you’ll have a period once a month (every 4 weeks)• Combination pills that contain both estrogen and progesterone, but are specifically designed to reduce the frequency of your periods from once a month to once every 3 months (every 12 weeks) • Non-combination progesterone-only pills, which CAN sometimes cause your period to stop while you’re taking itIf you’ve missed a period, call your health care provider right away to make sure you’re taking your pills correctly and find out if you need to take a pregnancy test.Keep in mind, the birth control pill can provide up to 99.7% protection against pregnancy when taken correctly. Most birth control pills require that you take them at the same time every day – for example, at 9 a.m. every morning – to ensure maximum effectiveness.If you’re concerned about a change in your cycle or if you have a hard time taking your pills correctly talk to a health care provider about your options. You can also use the MyMethod tool to find a birth control method that fits your lifestyle.