B超检查的预产期在4月20几号，什么时候有的

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快速问医生

病情分析：一般来说，如果要是预产期是在4月20号的话，那一般来说，没次月经的话，应该是在七月的13号，这样同房怀孕的时间应该是在七月的底，所以在七月初的话，这种情况是不符合的，所以一般考虑是七月底同房怀孕的

万吉鹏

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提示：本内容仅作参考，不能代替面诊，如有不适请尽快线下就医