Taking b6...

Jill • Married to an amazing man. Have a beautiful handsome baby boy. Baby #2 is on the way.
So after two consecutive miscarriages I am really considering adding more b6 in with my prenatal. Which would bring it to 60mg a day. My Dr put a referral into the gyno so I can have all testing done. But I just had a miscarriage and me and husband are wanting to try right away. My thought is if I add b6 (helps with progesterone) maybe If it helps I can actually maintain a pregnancy, figured it's worth a shot seeing we don't know how long the wait list for the referral could be. And if for some reason I miscarry again then I know I at least tried that.
Has anyone else boosted their progesterone with b6 and prenatal and actually maintain a pregnancy?? 
Thanks