Not only that, temp can be affected by so many things. I would get so many blips on my chart just due to waking up in the middle of the night to go to the bathroom! Temp can be affected by taking Tylenol, Benadryl or even a glass of wine before bed. Then you have to take into account your stress level, which pretty much goes through the roof trying to figure out NFP!
“Temp can be affected by taking Tylenol, Benadryl or even a glass of wine before bed”
Receptivity can be affected by a glass of wine before bed too.