Flat temps for over a week

[mayacat]

Has anyone else had flat temperatures like this for this long before ovulation? My numbers have been within 0.04 degrees of each other for quite a while now and wondering what's going on.

 

[CheshireDucky]

That happened to me recently and it was my thermometer on its way out. Is there any way you can test your thermometer against another one to see if it's displaying accurately?

 

[Dill]

I'd definitely suspect that your thermometer has reached the end of its lifespan!

 

[mayacat]

But if I temp orally, I get a much different reading, (36.35 instead of 36.6-ish) so I doubt it's the thermometer. Although I could be convinced otherwise. How long are the things supposed to live? I guess mine is 3.5 years old now since I used it to get pregnant with DD.