بسم الله الرحمن الرحيم
(Fatwa: 964/843/SD=8/1439)
After awaking if one is sure that one has not discharged semen rather it is the wetness of leucorrhoea then ghusl will not be wajib in this case, it does not make ghusl wajib. However, the dampness of leucorrhoea is impure if smeared with body or clothes then it is mandatory to clean it. The remedy of waswasah is to pay no attention to it.
ومن وراء باطن الفرج فإنه نجس قطعاً ككل خارج من الباطن كالماء الخارج مع الولد أو قبيله . (الدر المختار مع رد المحتار)
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband