Is what exits from the glands on the sides of the urethral opening impure, and does wady exit from Skene's gland or from the urinary tract itself, and are the glands in the urethral opening itself or beside it?

What a woman sees exiting the urinary meatus is impure (najis), whether it originates from the aforementioned glands or elsewhere. What she sees exiting the birth canal is pure (tahir). Al-Wadi (a thick white discharge) is impure (najis) and purification from it is obligatory.