What is the ruling on seeing a turbid, water-like drop after ghusl from menstruation, and is ghusl required after seeing it, given the presence of scrupulousness regarding purity?

Knowing purity by dryness is easy. It is done by placing a piece of cotton on the outer part of the vulva. If it comes out clean, free of blood, yellowness, or turbidity, then purity has been attained. Any yellowness or turbidity that appears after that, outside of the usual period, is not considered menstruation. Based on this, it is not necessary to perform ghusl for the aforementioned turbidity. One should repel and struggle against obsessive thoughts.