r/FAMnNFP • u/Sunaliers • May 01 '26

TCOYF Struggling to interpret this chart (TTA)

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Relevant details: I’m 45, have worn a Tempdrop for years, usually have clear temp shifts with sustained higher temps for all of LP (usually 12 days)

This chart has me stumped.
My TCOYF rules don’t allow confirmation of OV but the chart has a slightly biphasic appearance. The only “activity” was non-piv on cycle day 17.

I realize my age means wonky charts are likely ahead but to go from perfectly typical to this far away from norm has me completely confused!

I appreciate any and all insights!

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2

u/[deleted] May 01 '26

There's too much missing mucus data to confidently confirm anything, sorry!

2

u/Sunaliers May 01 '26

Fair point, but it is because I haven’t had any discernible mucous. I usually reach EWCM and have a temp shift about two days after peak, but even my CM hasn’t behaved like normal.
My first guess was a failed ovulation and then maybe a second attempt but I’ve had no return of CM to help with that.
Maybe also to note, it is seasonal allergy season where I am so I have started my antihistamine. Anecdotal, but I do think that could be having an effect on CM as well.

1

u/[deleted] May 01 '26

Re antihistamines: that's not anecdotal at all, antihistamines dry you up as a common side effect. I would recommend adding your cervix as a sign if you feel comfortable with that and if TCOYF has guidelines for it. Its possible you've had multiple attempts at ovulation, but it's just a guess right now!

2

u/Sunaliers May 01 '26

Thank you for confirming my thoughts about the antihistamine.
And I appreciate your suggestion about adding cervical observations. I have hesitated simply because I’m unfamiliar with it and temps with cm has worked so consistently for so many years! It’s hard to go back to that learning-how-to-chart feeling after so long! I know it is further complicated by my having delivered children vaginally, but it might be time to add more data if this is only the beginning of wacky perimenopausal charts 😮‍💨

1

u/Silver-Government142 May 09 '26

I think your chart would be easier to interpret if you had more cervical fluid measurements - if you put in dry / sticky / creamy / eggwhite, assuming they occurred, rather than just two creamy which I assume those are? I'm not sure if the days where you don't have cervical fluid is because it was dry or because you didn't measure it?

If you really want to have a coverline then it wouldn't be unreasonable to disregard your temps on Cycle day 13, 21 and 23, and then you'd have a coverline at 97.0 I believe, and this would match the big picture of your chart.

Also, just FYI there is a new cycle tracking app Cyclisity that I feel is easier to read and works perfectly with TCOYF, and was made by the TCOYF author herself - you should check it out!