Is what comes out of a woman a week after purification madhy (pre-seminal fluid) or normal discharge, and should she measure the discharge of madhy in her case by normal situations and only wash what she is certain is madhy?

We ask Allah to heal you from obsessive thoughts (waswas), and its cure is to ignore it and seek refuge in Allah from it. As for the discharge that exits from a woman's private parts, the original ruling is that it is a normal discharge (vaginal moisture), and it invalidates wudu according to the majority of scholars. However, the preponderant opinion (rajih) with us is that it is pure (tahir), so it is not obligatory to wash clothes from it, even though doing so is more cautious. Unless this discharge is accompanied by a clear indication that it is madhy (pre-seminal fluid), the original ruling is that it is not.