I asked Dr Google and came up with Vitamin B6. I was ovulating around day 28 - 32 and then AF would arrive 4-8 days later. I started taking vitamin B6 - just the Blackmores one - on CD 8, ovulated on CD 18, fell pg and stayed pg. You could have knocked my socks off. I had a referral from my GP to start looking into other options if that cycle went the same way (which probably would have involved Clomid and progesterone), but as it turned out I didn't need it!

I used to take Vitamin B6 for horrendous PMS and it always did me good. I don't always like or trust Dr Google, but as I knew B6 does me nothing but good, I figured it was worth a try.

Good luck!