I have been charting for a while, using the OPKS....Got a positive Dec. 29, 30, 31......CD 23, 24,& 25. I had a temperature shift Dec. 31 or CD 25, Fertilityfriend.com says I ovulated then and I am 9 dpo.
However, the Ovusoft software says I ovulated CD 31 on Jan. 5???
Which should I go by? I mean I put the same information on both, so why am I getting two different dates???