Surgical treatment for penis fracture sounds like a rough go on its own. When were you allowed to resume sexual intercourse after that? You are really just at the point in recovery in which you are allowed to even get any sort of erection again. So, I'd hold off on Viagra. I'd wait a full 8 weeks and make sure you've cleared it with your doctor. You've got no curve post surgery?
Well, a mental block can make things difficult. You just had a traumatic even take place (surgery) on your penis. But go easy because you are at the time frame in which you should just now be returning to have erections. I would not use Viagra yet at this time. Glad you didn't develop a curve post surgery. that happens 5% of the time and can create a whole new set of problems.