The first period after a miscarriage is actually usually late. Some interpret this lateness as a sign of pregnancy, but it is simply a woman’s body recovering from the trauma.

The placenta is responsible for working as a trading post between the mother’s and the baby’s blood supply. Small blood vessels carrying the fetal blood run through the placenta, which is full of maternal blood. Nutrients and oxygen from the mother’s blood are transferred to the fetal blood, while waste products are transferred from the fetal blood to the maternal blood, without the two blood supplies mixing.

Because sperm can survive in the fallopian tubes for up to a week, you don't have to time sex to the exact moment you ovulate to get pregnant. This window includes the five days before and the day of ovulation itself.

Eggs are removed from your ovaries and are fertilized with sperm in a laboratory. A fertilized egg is then transferred to your uterus, with the hope that it will implant itself.

Low sperm count can be caused by a number of health issues and medical treatments. Some of these include infection, undescended testicles and varicocele.

Most women with PID who complete their course of antibiotics have no long-term problem.