Changing thermometer mid cycle?

[Phoebe]

My thermometer died on me mid cycle this month. Now, I find myself to be pg and my temps to be low for me (this is baby #4). I switched a week or so after O and from that point on all my temps are down a notch.
I have no history of miscarriage and I feel well otherwise.

Any thoughts?

Amy

[K-Mom3]

Ha! I changed thermometers mid cycle this month as well! I think it is normal to have a shift. I don't have a clear shift but my temps are all over the place anyway so I don't know if I could even tell. I don't completely trust my temps for this cycle because of changing thermometers.