In general:

🔸women are most fertile before the age of 30
after 30
🔸women’s fertility starts to decrease
🔸after 35 fertility declines more significantly
by 40
🔸a woman’s fertility is about half the level it was before she was 30.

A study compared women’s ability to conceive, in different age groups. It showed that, compared to women aged 30-31, the chance of conceiving was:

🔹14 percent lower for women aged 34-35
🔹19 percent lower for women aged 36-37
🔹30 percent lower for women aged 38-39
🔹53 percent lower for women aged 40-41 years

Women younger than 30 have about a 20 percent chance of getting pregnant naturally each month. By age 40, the chance of pregnancy is about five percent each month. However, if there is a hormonal misbalance affecting menstrual cycle it can take much longer.

So make sure you start your treatment ASAP in case you have infertility.