B6 = late ovulation??

Hello, 24, ttc #1, cycle 3.
​At the beginning of this cycle I started taking vitamin B6 to increase the lenght of my luteal phase (for the last two cycles it's been 11 days). But now I'm on CD 20 and this is usually when I ovulate, as evidenced by opks on previous  cycles. I had a dark, but not positive OPK three days ago and since then my opks have gotten lighter, however, I haven't had a temp/bbt spike yet. 
​Has anyone taken B6 and ovulated later because of it?  Or not ovulated at all?