There is no magic number. It is just whenever it starts to fall. Once it levels off I feel better. There are also times when it starts to go up that I will hurt also. Usually when it rises quickly is when that happens. Basically any change up or down, BUT when it goes down is when I feel pain more acutely. Down is worse.

I truly am a walking Barometer. I feel it coming even before the Barometer registers it.

DebbyV