femSense can help identify days of high fertility and days of low fertility.
femSense alone is not a form of contraception (and is also not approved as one) but rather a tool that, when used in combination with other hormone-free fertility awareness methods of ovulation detection, can be used for the fertility awareness method of birth control.
Certain medical conditions prevent femSense from reliably measuring ovulation. For more information please see When can femSense not be used?
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