When do you think I O'ed?

[47chromosomes]

Curious to have your expert opinions...

I did not begin taking temps until day 14.  Sorry I don't have a chart...

day 14 97.5, CM = stretchy and egg white.

day 15 97.5, CM = stretchy, lots, opaque

day 16 97.5, CM = stretchy, lots, opaque

day 17 97.3, CM = stretchy, lots, opaque

day 18 96.8, CM = stretchy, lots, opaque

day 19 97.5, CM = stretchy, lost, opaque

day 20 97.7, CM = tacky, pretty dry

day 21 97.6, CM = dry

day 22 97.9, CM = dry

day 23 98.0, CM dry

day 24-now, all 98.0, no CM.

I am thinking possibly O happened on day 19 or 20 based on CM, the temps though seem maybe indicate more like day 21?  What would you make of it?  Just curious.  This is the first month I have charted since my son was born in 2010, and it seems different than before.  He is still bf at night.  Thanks!

Edited by 47chromosomes - 9/10/12 at 9:34pm

[pokeyAC]

My hunch would be CD18 because your temp went down that day and then went up after that.  Mine sometimes dips the day I O.

[47chromosomes]

Thanks for the input!  I thought I had heard that can happen, and since I have been religious about taking it at the same exact time each day one of my thoughts is that it could have happened that day, and the temp after that even though not higher than the previous ones was still indicating a climb upward?  Thanks!