Charting help

[stretch358]

I had a baby 4/11 and still have not gotten my 1st PPAF.  I began charting temps recently TCOYF (FAM) says I O'ed dec 15,  FF says I Oe'ed DEC 24/25  it has changed it a couple times.  Can you tell me what you think?

http://www.tcoyf.com/members/hmb123/pccharts/37.aspx

http://www.fertilityfriend.com/home/1da588

Thanks.

[pokeyAC]

Bumping up for more input.