According to fertility friend, I am 15dpo, but after a very long time ttc I don't want to get my hopes up though my normal luteal phase is 14 days. I used OPKs this month, so fertility friend says my ovulation day is the first day I had a negative opk after two positives. Is there any way this might not be accurate? Ovulation day was a good 2 days early this month, so I'm still not technically late for my period - wouldn't think anything was going on had I not used OPKs.
Can anyone advise - can OPKs be inaccurate? Am I right to think that my luteal phase wouldn't change from month to month? All help much appreciated.