All of the above anomalies can result in irregular periods following a miscarriage.

A premature birth is a birth that takes place more than three weeks before the baby is due.

An egg lives 12-24 hours after leaving the ovary

Heavy drinking is associated with an increased risk of ovulation disorders — and some research has shown that even light drinking might reduce the likelihood of conceiving.

Hyperprolactinemia causes infertility in around 11% of oligospermic males. Hyperprolactinemia also directly influences spermatogenesis and steroidogenesis by acting on prolactin receptors present in Sertoli cells and Leydig cells in testes, and produces primary hypogonadism and infertility.

These methods work only for 1 hour. You should insert more spermicide each time you have vaginal intercourse.