Hi Dave,
A little over two and a half years ago I was in the same state as it seems you are now. Catheter out, padded up and never feeling the need to pee. The reason for that was because I was constantly dribbling into my pads (actually, I was so bad that I wore pull ups before moving to Tena level 3 pads) and consequently, my bladder did not fill to make me feel that I needed a pee. I couldn't even bend to dry my feet after a shower without squirting on the floor. And did I know I was doing it as it was happening? No! I didn't feel a thing. That's incontinence for you. I was incontinent and I thought it would never end. Everyone was telling me it was temporary, but I didn't believe them. In my case, it took a good three months before seeing a significant improvement and after six months I was using level 1 pads. Many fellow sufferers recover much quicker than that. Now, I consider myself 98% continent. I don't wear any pad at home unless I am doing heavy lifting or exercise and if I am out for the day or evening, I wear a level zero pad for confidence. I'm happy with that. Keep up the kegels and remember you have had major surgery and now rely on only one sphincter to hold back the flow instead of two. Your insides will take weeks to heal.
You will get there and as it improves you will feel the need to pee (and also probably know when you are leaking).
Very, very early days Dave. If you need reassurance, please do call one of the PCUK nurses. They are, quite frankly, wonderful and from my experience with them, there is no such thing as a stupid question.
Good luck and keep in touch.
Peter