Vitamin B screwed up my ovulation! Last cycle it delayed O by 5 days. This cycle I have had 3 positive OPKs on 3 different days (not in a row). Each day of the positives I also got EWCM so I have no idea of when (or if) I ovulated. I'm on CD 30...AF is usually here by CD 29 but all I've had is very light brown discharge mixed with clear slightly stretchy CM. All tests have been BFN...so frustrated! Ready to move on to the next cycle