I don't need to look it up, I know AMA is 35. I also know infertility affects 1 in 8 couples in the US, and those rates are higher in areas where career comes first. The women I know that needed IVF were marathoners, college athletes, and run of the mill humans. One had breast cancer in her 20s and ended up freezing eggs before cancer treatment so she used IVF and a surrogate.

My friends and colleagues that went through unexpected infertility were all shocked. Because I spend too much time on the interwebs I know more about it than I should, but overall it's a lot more frequent than people realize and it smacks people in the face when they've spent 15 years doing everything they can to not get pregnant. Even a friend who accidentally got pregnant in college ended up needing 2 years of trying to conceive when she wanted another child at 31. I personally lucked out, but I was surprised considering how many women I knew who were trying for more than a year, following all the charts and figures, without success. Our bodies weren't meant to wait this long.

Heck even Michelle Obama went public about needing IVF to have her daughters. The biological clock thing is real.