IUD
How it works: A doctor inserts the small t-shaped device into the uterus, which affects the way sperm moves and prevents it from joining an egg. It also alters the lining of the uterus.
Success rate: Less than one out of 100 women will get pregnant while using an IUD.
Pros: It's safe, effective, and reversible, and it won't impact your hormones. While an IUD costs between $500 and $1,000 up front, it can last up to 12 years. If you have insurance, it's covered for free under the Affordable Care Act. It might also protect women from endometrial cancer.
Cons: An IUD does not protect against STIs. The common myth that it can cause infertility is not true. However, if you have an IUD inserted while you have an STI, you could increase your chance of infertility.
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