Greetings, Timmy77. My doc said even though I could get about 80% erections shortly after catheter removal, that I shouldn't use them for 6 weeks. Lots of things that are interconnected are going through healing processes after surgery and they need the rest and stability for a few weeks post surgery.
I do know there are others who indicate their doc's told them if they could get an erection to go ahead. I suppose it depends on the doc. David