What should I do if madhiy (pre-seminal fluid) is discharged from me? And is my action valid if I wash the clothes and the spot it touched, and perform ablution only for prayer?

Al-Madhi (pre-seminal fluid) is impure and nullifies ablution (Wudu') by scholarly consensus. The male organ and testicles must be washed from it. For any clothing it touches, it suffices to sprinkle water on it, though washing it is preferable to avoid scholarly disagreement. Wudu' is not immediately required upon the emission of al-madhi; rather, it becomes obligatory when one intends to pray or perform any other act that necessitates ablution.