Forgive me if I told you any of this before. Have we talked about NaPro before?
Anyway if you O late and your LP is only 8-9 days on average this is a short LP. Has anyone done hormonal work up? Oing late and having a short luteal phase does not give your uterus lining enough time to prepare for a baby. And your lining may be starting to break down as a baby tries to implant. Late Oing is only ok if you have a normal LP which most doctors consider 10+ days to be normal.
If you have any questions about luteal phase defect, I'd be happy to try and answer them.
Re: smalltownmama - RE: late O
July 2012:IUI #6 on 7/28, BFP on 8/9,beta 97, 8/11 189, 8/13 400!! DS born 4/18!
9/30/13 - Miracle BFP, released from RE 10/21, EDD 6/6/14, DD born 5/27!
6/19/16 - Miracle BFP, EDD 2/25/17
We have talked about NaPro
However, I do have a 12 day LP (occasionally 11 or 13 but almost always 12, so that should be ok).