Roger, you did find a good place to ask and learn. I am surprised that your Doc did not at least point you in the direction of information that describes this journey. You will find it here. You have passed, what for me was the worst "mental" part of the journey, i.e. the Dx and figuring out what to do. You are "on the other side" as they say. That is good. Next step, catheter removal and discussion with Doc about post-op pathology report. Biopsies only give a sense of the real situation, though they are indicative of the situation. A pathologist examines the entire gland (and lymph nodes) and determines if the Pca has expanded outside the prostate. If so, then there may be more treatments to discuss. Based on Gleason 3+4 you have a high liklihood that it is contained and such a score is not considered "aggressive" but rather is on the "intermediate" level. "Low" would be 6 and under. The patholgy report will tell for sure whether it is 3+4 or something else.
Following the catheter removal/pathology review, the next chapter is dealing with "retraining" your bladder as a nurse told me. This can take up to several months to get total control, so we are told. Some take more, some less. I am 10 days out and still working on it but it seems to be getting better each day. After that, the next step is recovering in the ED department. Some bounce back quickly, others take a while, some, depending on the procedure do not.
One thing for sure though, we are all very grateful to have it out of us and behind us as we deal with the new chapters one day at a time.
Another thing you must do for yourself and your family, is study and understand what your own situation is as you proceed on the journey.
Best wishes to you,