Hi Sandy,
It is not necessarily all doom and gloom as is being suggested here. Lyn is spot on with her comments, so no adjustment need there.
But, if you are fortunate to have nerve sparing surgery, both bundles on either side saved, or even one side saved, you may recover and achieve useable erections and orgasms in time? But, and this is a big "BUT", this is all individual to every man.
It is true for me and probably many others that orgasms are "different" to what they were? The most noticeable difference is that they are dry. This can be a bit of a bonus for some, especially the lady. Some women do not like the threat of fluid, and there is no damp patch, no need for her to go and clean up afterwards. It is not all bad, not in my experience anyway.
So, to the issue of whether you will notice, if and or when you orgasm, if you do? For many, and for me, the orgasm process, the feeling and experience is pretty much as it was prior to my surgery. The build up, I know when it is coming and if it is achievable. I also know when to stop if it is not on the cards, and in any case my legs or knees will give up if it is not going to happen. ;-)
When it happens, it is good. I know it, my partner knows it, the throbbing and pulsating is still there. Granted not as it was before, but I am getting on a bit now.
What ever you recover, and you may recover a lot, a bit, or not a lot, you will learn to appreciate and just be grateful and happy that you are alive to either bemoan the fact that you ain't recovered a lot or celebrate the fact that you did make a good recovery.
I wish you well, but if I were you I would be "at it" 24/7 in the meantime. If my knees and legs could stand it!
atb
dave