Why did you stop the exercises
and were you not followed up by the physio.?
Why does your GP think surgical intervention necessary? Did he mean 'surgery' or investigations ? This is your body and until you know exactly what he is thinking and until he has referred you to the appropriate Consultant, breath ;-). Maybe keep a diary of symptoms?
You could ask for referral to a Incontinence Nurse or look at the local Hospital's website to see which services they provide. Then ring and ask what the procedure is for referral.