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Biologically, fertility decreases with age. While women under age 30 have about a 20% per month chance of conceiving, only 5% of women over age 40 will conceive. Although women continue to have regular menstrual cycles until sometime near menopause, this doesn't necessarily mean they remain fertile. Regardless of the woman's cycle, fertility declines with the reduction in ovarian function and egg quality as women age.
Kevin Windom, MD, Obstetrics & Gynecology, answeredThat is an excellent answer. I would like to add that the miscarriage ratefor a 40 year old is aprox 50% and a 42 year old woman has a 75% chance of a miscarriage. A woman who is 35 or older should havs an AMH level to check to see how fertile she is and seek medical attention if she is not pregnant after 6 months of trying
A woman's fertility declines by age. The older a woman is, the less likely she is to get pregnant each month. A woman is her most fertile before she is 25 years old. By age 25, fertility begins to decrease. Women in their twenties have a 20-25% chance of pregnancy each month. By 30, the chances of becoming pregnant are significantly smaller - at most, the likelihood of pregnancy is around 15%. By age 35, the likelihood of pregnancy in any given month is less than 10%. By the age of 40, most women will have difficulty getting pregnant without intervention.
Unlike a man whose body is continually making new sperm cells, a woman is born with all of the eggs she will ever have in her lifetime. As a woman ages, the percentage of eggs she has left (also known as her ovarian reserve) decreases. When a woman hits 30, she will only have about 12% of her eggs left. By age forty that number drops to a very small three percent.
If you are a woman under the age of 30 and are actively trying to conceive, you are urged to seek treatment after you have tried on your own for six to twelve months. If you are over thirty and are having trouble conceiving, do not wait more than six months to seek medical attention. Time is fertility.Helpful? 3 people found this helpful.