![]() This can include:Ĭhanges in menstrual bleeding are also common in the weeks, months, and years after the nonhormonal IUD Paragard is inserted. In the weeks, months, and years after insertion, all hormonal IUDs have similar side effects. To learn more about the insertion process, check out our comprehensive guide. Side effects during and immediately following insertion are often the same, regardless of the type of IUD. Not only is sperm repelled by copper, but the ions change the lining of the uterus and the makeup of the cervical mucus to further block sperm from reaching the egg. It’s wrapped in a copper coil, which allows copper ions to release into the uterus and create an environment that’s inhospitable to sperm. It thins the uterine lining, so an egg is less likely to attach ( implant) to the uterus. ![]() Thickened cervical mucus inhibits sperm movement, making it harder for sperm to reach and fertilize an egg.It thickens cervical mucus to prevent sperm from entering the uterus. ![]() The hormone works to prevent pregnancy in a few ways: Each brand - Mirena, Skyla, Liletta, and Kyleena - contains a different amount of the hormone, which affects how long the IUD will last. Hormonal IUDs contain progestin, which is similar to progesterone, a naturally occurring hormone in the body. There are two types of IUDs: hormonal and nonhormonal.īoth types work differently, but they have the same outcome: to make it difficult for sperm to reach and fertilize an egg. ![]()
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