Is it correct to disregard the feeling of wetness to overcome the obsessive whispers (waswas) regarding the exit of prostatic fluid (wady) or other discharges?

What you are doing by ignoring this feeling is correct. There is no better cure for whispered evil suggestions (waswas) than to turn away from them and not pay attention to them. So, do not care about these doubts, do not search for what you suspect has come out, and do not rule that anything has come out unless you have absolute certainty of it.