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Pills: Mini-Pills
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Mini-Pills are progesterone-only birth control pills. Mini-Pills come in packs of 28 pills and you take one every day. They contain a synthetic form of the progesterone hormone and no estrogen. The Mini-Pill affects the mucus around the cervix and makes it harder for sperm to enter the uterus. It ... affects the transport of the egg through the fallopian tubes. In these ways, the Mini-Pill prevents fertilization.
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There are two main types of birth control pills – combined birth control pills and progestin-only pills. Combined birth control pills contain both estrogen and progestin. Progestin-only pills (POPs), or “mini-pills,” contain only progestin. To use the medication, one pill is taken at the same time every day for 21 days, 28 or 91 days. When used correctly, birth control pills have an effectiveness rate of more than 99 percent. However, this effectiveness may be reduced by some medications, including certain antibiotics,and improper use.
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The most common side effect for women using Mini-Pills is irregular bleeding. While many women on Mini-Pills have normal periods, others may have irregular periods, spotting between periods or no periods at all. If you do not bleed for 60 days, call the clinic to arrange for a pregnancy test but continue taking your pills.
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