A couple is said to be infertile if they haven’t conceived after 12 months of spontaneous trial of conception.
In a 28 day period cycle , female ovulates supposedly on day 14 of the cycle counting from day 1 of the period. The egg survives for 24 hours while sperm survives in female reproductive tract for 48 hrs to a week. The most fertile day is day 10th to day 18th of the cycle with couple performing sex at least on alternate days.
In case of subfertility the basic investigations includes testing the functioning of uterus, ovaries, Fallopian tubes and the quality of semen.
The most common reason of infertility is anovulation most commonly caused by PCOD. Most of the an ovulating women can be made to ovulate using clomiphene citrate or letrozole which are cheap oral medicines . Not every infertile couple needs IVF . In a cycle where ovulation induction has been performed the lady is advised to undergo follicular tracking to insure ovulation and thus time the intercourse better .