I'm hoping someone can help me out with this...
I have been charting for around 6 months now. I usually ovulate on day 14/15. If I do an OPK then it's either positive or almost positive by CD13.
Yesterday was CD13 and I did the OPK as usual and there was not even a faded line. Nothing.

I'm doing a 3 day cut off, ttc a girl and now I'm wondering what's happening. Is it possible that I ovulated earlier this month? Although then my temp should have spiked by now. What would make it so very negative?
The only thing that I've changed is that I started taking a folic acid supplement which has vitamin b6 in it. Don't know if that would affect ovulation?
I'm really beginning to panic that I'm not going to ovulate.

Any advice?