BBT termomethers?

[MaggieBluee]

Hi all 👋

I’m new to this group and very pleased I have found it!

I’ve been measuring my BBT temperature for about 5 months now. I’ve been using a cheap thermometer but last month my acupuncturist suggested to get a more popular one Braun which has lots of great reviews. Since I started using the new one, my temperature difference is quite big! The question is now which one IS CORRECT?! I’m very confused and don’t know what to do because what if the old one always gave me wrong temperatures?!?

Has anyone had a similar experience?? 🙏