I can't comment on the Viagra other than a women's version would be nice.
I will say that your surgeon is still an idiot. 300mg of Lyrica is the starting "therapeutic" dose of Lyrica. I've gotten the Lyrica spiel from countless Docs and it's all the same. Other than adding about 4 lbs per 100mg to my body and giving my short term memory a little test, it doesn't make me a zombie. Granted, everyone will have their own experience.
Keep up with your manual therapy! Maybe a man can weigh-in on the Viagra question. My only guess is it's moving all your blood to one region.