Generally speaking im someone who suffers from waswas, a psychologist also once said that I have ocd, the problem is ustad that I think to myself " what if it's not was was and these were actually urine drops and now none of my Salah will be valid ", how do I know when it's was was and when it's not

This is waswas brother ignore it and follow the instructions of your doctor, and don't try to look for someone to feed your waswas, so you start asking multiple people so that when 1 of them says check then you opened the door for the shaitan to ruin your life and then you spend 4 hours everyday in the bathroom and start developing health problems.