Unformatted text preview: correct) that means the success rate is 96% and the failure rate is 4%. A pro of withdrawal is there is no cost to use it and it does not ruin the mood or the spontaneity of intercourse but the cons are that it does not protect against pregnancy if any sperm is left inside the vagina or against any STI’s that might be present in either partner. This form of birth control is very risky at best....
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- Spring '10