CM has changed colour!

A
I'm 11 DPO and about 6 days away from AF being due.
The last 3 days I've had very mild cramps and tugging feelings and tingly boobs. I've ignored these 'symptoms' as i promised I won't symptom spot.
However, my CM has changed colour during my the last few days. The amount hasn't really changed, nor has the type of CM but instead of being white like it normally is at this time during my cycle it's more like an off white/light brown colour.
It doesn't itch or smell.
Anyone else have this? Is it normal?