I was told by my fertility-specialist OB that, based on their standard hormone-level testings, it was "highly, highly unlikely...we aren't allowed to say 'impossible'" that I would be able to get pregnant when I was 41 and wanting a third child. I took the test results to a highly-recommended acupuncturist who specializes in women's health issues and asked her opinion. She said she could "definitely work with those numbers." Six months later I was pregnant with my now-6-year old son. Three years later, at the age of 44, I sought her help again. I'd just had a surprise pregnancy that was ectopic. I was perimenopausal and sad. Our dietary, exercise and lifestyle changes were designed to balance my hormones so I would feel better. And I happily wound up pregnant with my 4th child.
My top tips are to eat 'clean,' get regular exercise, get good sleep, relax, be open to options that might perhaps be outside your normal range of thinking. And patience. And I am a huge advocate of Chinese medicine :)