Sorry to hear about that, having been there and got the T-shirt. One word of advice, along with the pelvic floor muscle exercises, measure the length and girth of your erect member before the operation. Those figures may come (pardon the expression) handy afterwards, depending on what nerves can be spared.
Lets just say afterwards, there's a mentality of use it or lose it and one of the instruments that help you use it, will require the measurements mentioned. It will avoid an avoid conversation at a later point in time.