The Odds of Becoming Pregnant

The chance of becoming pregnant for a healthy, sexually active couple is about 20% each month. The ASRM (American Society of Reproductive Medicine) defines infertility as one year of regular intercourse without conception. So take heart, conception is supposed to take several months. To understand how far technology has taken us, the following graph compares the odds of getting pregnant each month for natural conception and IVF (single cycle).

IVF chart

IVF dramatically improves pregnancy rates by essentially removing the difficulties due to ovulation and fertilization. IVF does little, however, to remove the difficulties with implantation and miscarriage. In addition, pregnancy rates decline with age.

While the graph above is very informative, the statistics should not be interpreted as if all women in a specific age group have an equal chance of getting pregnant. Factors such as smoking, excess weight, problems in your reproductive tract, and your ovarian reserve also have an influence on your chance of becoming pregnant. Thus, the statistics cited in the chart are the average of women at a specific age, some of whom have a much better than average chance of becoming pregnant and some of whom have a much lower than average chance of becoming pregnant.