How do birth control pills work?

I don't understand...if BC pills stop ovulation.why do you still hold a period?

can someone explain everything to me?
Answers:

Why do i hold what looks like white cement always coming out of my vagina?

The bleeding during your length is not from the ovulation. It is simply the reaction of your body to not have an implanted egg. Since the BC pills keep your eggs from implant, the body usually continues as normal and releases the facing of the uterus (where the bleeding comes from).

No Period after taking Yasmin?

The two hormones in the combined oral contraceptive pill, oestrogen and progestogen work on several levels to prevent pregnancy. Primarily, the Pill works by stopping ovulation (the release of an egg from the ovary). If an egg is not released later of course conception cannot give somebody a lift place. As a back-up, the Pill also makes the mucus released by the cervix thicker so the sperm cannot procure through and thins the lining of the uterus so a fertilised egg have difficulty implanting.

When a woman take the Pill her normal menstrual cycle is interrupted. In effect, the Pill tricks the body into believing it is pregnant. When the Pill be being developed, however, it be felt that women would find the famine of a normal menstrual cycle disconcerting. Many women, for example, rely on their regular menstrual term for reassurance of not being pregnant. Consequently, it be decided to hold the Pill consist of 21 days of active pills (pills containing the hormones), followed by a pill-free interval of seven days (either no pills or sugar pills). The speedy decline in the artificial hormones which occurs surrounded by the pill-free interval results in a 'withdrawal bleed', which somewhat resembles a menstrual interval and is often still referred to as a 'interval' for simplicity. It is important, however, for women to take in that when they take the Pill the bleeding which occur during the pill free interval is not a menstrual period.

Similarly, women should be aware the current casing of the Pill (21 active pills, seven hours of daylight pill free interval) was developed primarily for tolerability reasons and not because of any physiological pretext. Indeed, contraception expert John Guillebaud explains "When you think around it we have here a bizarre contraceptive: one that we providers truly instruct the users not to use - for 25% of the time". As Guillebaud suggests, the pill free interval is the 'Achilles heel' of the Pill's efficacy as it can contribute to pill failure. To stop ovulation from occurring a woman wants to take seven consecutive live pills. In addition, if more than seven days are missed a woman risks ovulation and, if unprotected intercourse occur, pregnancy. The lengthening of the pill free interval is one of the most common cause of pill failure and is recurrently associated with a woman starting her topical Pill packet late. It is drastically easy to start a pill packet postponed with women any simply forgetting or not having their unusual packet with them.

Similarly, if some of the influential pills near the shutting of the previous packet or active pills in the neighbourhood the start of the new packet are any missed or not absorbed properly (due to vomiting, diarrhoea, use of antibiotics) this can also tight that there have not been adequate pills taken overall to prevent ovulation. Women who miss pills towards the end of their packet repeatedly mistakenly believe it does not matter because they are have their 'period' soon. They do not realise that missing pills hard by the pill free interval may mean they hold not taken enough pills to prevent ovulation contained by the next month. The most perilous time to miss a pill is at the end or foundation of a packet (because it lengthens the pill free interval beyond seven days).

The pill free interval be devised in the hasty days of the Pill because it was feel that women would find having a 'time of year' more acceptable. Additionally, all the notes on the safety of the Pill be conducted using women who were have a pill free interval. If women did not have a pill free interval they would if truth be told be taking more pills a year and, therefore, would be exposed to more of the hormones. For a stock of reasons, however, women may choose to tricycle their pill (taking three packet together without a pill free interval), thus reducing the number of debt bleeds a year from 12 to four.