Hi Snoodles,
I too have seen a Chinese Medicine/acupuncturist who put it to me this way - if I haven't got enough blood for AF, how will I be able to generate enough blood to support a baby? Which made sense to me.
I have since gone from a half day bleed and no regular cycle to a 30-33 CD and 4-5 days AF. If nothing else, mentally I feel more capable of getting pg.
However, she said nothing at all about not being able to conceive on such a light AF.
Hope this helps.
S'rose