From research I have done on the internet (which is not as good as a good endo) and from a paper the FS gave me, the ATA's cause a problem where the Thyroid issue was not treated, but they didn't make any difference to fertility where the thyroid problem was treated.

Not sure if it is the ATAs (I suspect probably not now) or just being over 40 that is my problem. Could be something else, eg NK cells. Easier to focus on the ATAs, as I can't do anything about being over 40 except lie about my age!!!