I think women are generally unaware of their natural conception rates based on their age. Most 30 year olds think they can wait until they’re 35 to get pregnant because they are under the impression that bad things happen after age 35. Conception rates based on age tell a different story.
Most of my patients are surprised when I share natural conception rates with them. Fertility peaks at age 30 and declines from there. Be sure to know what your fertility indicators say about you so you can figure out the best plan for you and your future family.
This CDC website has a lot of helpful FAQs.