Is it really safe to have unprotected sex in your ‘safe days’?
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It depends how you determined the safe days. With natural methods like the Billing's Ovulation Method or the Creighton Model, days of fertility and infertility are determine through the observation of the quality of the cervical mucus days and putting down on a chart. Both methods have a about 96% practical effectiveness when used to postpone prengnacies.
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