why does not all copulations lead to pregnancy???

There are various reasons due to which pregnancy do not occur even after copulation. Some of them are-

  • Use of any contraceptive barrier at the time of intercourse.
  • The zygote do not get implanted in the uterine wall.
  • sperms are not able to reach and fuse with the ova.
  • The egg is not released when copulation is taking place.
  • Due to poor health condition and hormonal disbalance, female in not able to conceive.

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Fertilisation can only occur if the ovum and sperm are transported simultaneously to the ampullary isthmic junction and also if there is infertility in either male or female there also pregnancy isnt possible...

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