It points directly up? I used to have that 'problem' when I was a teenager, now that I'm 22 it's basically forward. It's a good problem to have
Where does your shaft bend? The Peyronies disease is pretty specific, just do a google image search. If the entire shaft is facing up then it just means you have a really, really hard erection. It might be painful for her, but missionary should be good position for you if you're laying laterally with her, or even better, her laying down flat on her stomache with her legs together and you entering behind, again, laying paralell to her body...