BBT change

Andrea

I’m new at all of this BBT. But, I read that the BBT can be altered if a heated blanket is used. I use one. It’s winter and my apartment is not very heat efficient. I figured that if I don’t change the temperature, and use it every night it would be ok...? I guess if it is a constant, it shouldn’t affect the temperature reading first thing in the morning. Any insight, greatly appreciated.