I Am Trying To Pass A 4mm Kidney Stone -

I am trying to pass a 4mm kidney stone - it's been 4 days - My doctor on the phone just told me to try Flomax, but warned me with my Wolff Parkinson White that it may drop my blood pressure and heighten my heart rate. There wasn't much else she said could help.. and a urologist wouldn't see me until I've tired for a couple weeks. Really needing another opinion - also - some people online drink Apple Cider Vinegar
claiming it can break the stones up a bit - Of course I would try that first - but wondering if you have heard of this in the main stream? Just looking for any helpful insights.. this is my first round of this.