A minipill (progestin-only pill or POP) is a form of birth control you take by mouth each day to prevent pregnancy. It contains progestin, a man-made (synthetic) version of the hormone progesterone. Unlike other forms of birth control pills that contain both estrogen and progestin, the minipill contains just progestin. The minipill is available Effectiveness: 87 to 99.7 percent (effectiveness is near 100 percent if the pill is taken daily as directed; because many women do not use as directed, the pregnancy rate is 2-9 pregnancies per 100 women each year, and it may be slightly less effective if you're overweight).. What is it? Progestin-only birth control pills contain a synthetic hormone similar to the progesterone produced by A hormonal IUD can make periods shorter and lighter, and it may reduce PMS symptoms for some people. Progestin-only pills, sometimes called mini pills, may pose a lower risk. Some studies have found that women taking progesterone-only birth control pills tend to gain weight, while others have found no link between progesterone and weight gain. (PMS) symptoms like bloating and mood swings. Women with polycystic ovary syndrome (PCOS) often exhibit elevated progesterone levels, which can contribute to weight gain Progesterone is usually given in the form of combined oral contraceptives, progestogen-only contraceptives or direct progestogen therapy. However, such medications can cause or worsen PMS-like symptoms. There actually is a connection between progesterone and acid reflux, but first, some basics: Progesterone is a hormone that rises in the body during pregnancy and during the second half of the menstrual cycle, closer to when your period starts, according to the Endocrine Society. Progesterone allows the lining of the uterus to thicken, says .

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