birth control pill is, and five reasons why the pill might fail. We also give tips on how to prevent pill failure and describe some early signs of pregnancy.The combined pill contains hormones that prevent ovulation, which is when the ovaries release an egg for fertilization.
Another type of pill, known as the minipill, causes a person’s cervical mucus to thicken and the uterine lining to thin, which reduces the likelihood of sperm reaching an egg.The birth control pill is very effective if a person takes it correctly and does not miss any pill days.
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