Chances of Getting Pregnant

This was another topic that I had a lot of interest in. As you probably know by now, I love the research, and of course, this is a hot topic. So here’s a bit of research on the topic. Certainly not all there is out there, but enough that it summarizes your probability of getting pregnant at any time during your journey. In summary, any woman during fertile years has about a 20% chance of getting pregnant any month. Your greatest chance of getting pregnant occurs about 2 days prior to ovulation. Here are two good graphs to depict that.




  • Ages 20-24
    • 90% of a women’s eggs are chromosomally normal
    • 96% chance to conceive within the year
  • Ages 25-29
    • 86% chance of conceiving within a year
    • 10% chance of miscarriage
  • Ages 30-34 – 20-25% chance of getting pregnant each month
    • Meaning that within a year, you have an 85% chance of getting pregnant
    • 20% chance of miscarriage
  • Ages 35-39
    • 15-20% chance to get pregnant any month
    • 78% chance of conceiving within a year
    • 30% of women take a year or more to conceive at this age
    • 2-7% chance of miscarriage within the first 12 weeks
  • Ages above 40
    • 90% of a woman’s eggs are chromosomally abnormal
    • After 45, 3-4% chance of getting pregnant in general
    • 10% chance of miscarriage within the first 12 weeks

Here’s a decent chart that summarizes that information. Note that it’s from a different source, so the numbers are slightly different, but it helps give the big picture I think.


Research suggests that out of 100 couples having regular, unprotected sex

  • 20 get pregnant within a month
  • 70 get pregnant within 6 months
  • 85 get pregnant within a year
  • 90 get pregnant within 18 months
  • 95 get pregnant in 2 years


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