Suddenly, women in their 20s are flocking to fertility centers, hoping to increase their odds of one day getting pregnant. Here’s what they – and you – need to know.

When it comes to fertility, 25 is the new 35. Women once waited until their biological clocks had almost popped a spring before bringing out the big guns, but smart young women today aren’t leaving anything to chance. Just consider that the number of women 24 years old and younger who reported trouble conceiving or maintaining a pregnancy has almost doubled. Or the fact that 44 percent of those signing up for reproductive assistance now are under 35, according to the CDC’s National Survey of Family Growth. From when to have sex to what not to eat, this comprehensive guide reveals the latest ways to plan for pregnancy — five, even 10 years in advance. (continue…)