Thanks for your query to us.
This is possibly a rhythm disorder of heart. Supraventricular tachycardia
is one of them. The exact diagnosis can be made only after having a look on ECG of that time when you are having symptoms. Sometime we get a holter monitoring (24 hours ECG) done for same.
An urge to pass urine is well described in episodes of SVT
You must visit a doctor for two reasons. 1. To get worked-up to ascertain the exact cause of your symptoms and to rule out more serious rhythm disorders 2. To rule out any underlying structural heart disease
. This should be done on urgency if you ever had a blackout/ unexplained fall or transient loss of consciousness
Hope this helps.