I've always had a clear, sharp rise on my BBT chart, so O' is easy to pinpoint. This month, it seems I'm having a slow rise for the first time!
I had several days of EWCM (I often have none). I did OPK's from CD11 to CD17 and gave up (basically I just spat the dummy because O wasn't happening lol). I noticed what looked like full ferning on a saliva test on CD15-18 and some partial fern days on CD14 and CD19.
So now FF has put my O day as possibly CD21. That was the last day I had EWCM. I had quite strong O type pains on CD21 & CD22.
FF says my O day is ambiguous because it's a slow rise and I don't have a positive OPK to match it up with. My temp wasn't higher than the previous 6 temps until the morning of CD23, but it had risen 0.1 degree the day before that. My one real clue of O is usually really sensitive n!pples the day of O. I had that on CD22 and CD23 though!
Usually I would just say "O happened around about then" but, it might make a difference as to whether we're in with a chance this month or not. DH came home on Tuesday (CD22) and we DTD at lunchtime. So, I guess if I O'd on Monday (CD21) we're probably out?
I'm not sure if there's even a way to know for sure, but out of interest, what do you think?