One of my friends (aged 35) is going through this now, and another woman I know went through it at 17. She eventually had a child with the help of a FS and a donated egg from her cousin. The first woman had no trouble falling pregnant, in fact her issue was falling pregnant too easily with multiples (happened twice when not TTC). We assumed she was going through menopause because she releases so many eggs at each ovulation that she is running out fast, if that makes any sort of sense at all. Sorry I can't be any more help that that, those are the only two women I know who have gone through this.