Waswasas

I suffer from urinary dribbling after using the washroom. I try my best, before I have to pray, to make it stop. Thereafter, I proceed to make wudhu and to pray. However, during prayer, I experience (very regularly) the feeling of something coming out. But I just choose to ignore this feeling, dismissing it as mere doubt and waswaas, and I continue praying (saying to myself that nothing came out). My question is, is it necessary for me to check, after prayer, if something did in fact come out? If it is necessary, what is the status of all those prayers I prayed where I did not check?