做完怎样确定没怀孕

{"name":"\u505a\u5b8c\u600e\u6837\u786e\u5b9a\u6ca1\u6000\u5b55","type":"\u6587\u827a\u7247","area":"\u5927\u9646","year":"2001","lang":"\u6cd5\u8bed","play":"\u62a2\u5148\u7248","type1":"\u6587\u827a\u7247"}