My is bent about 15% to the left, like a cucumber. Take a picture for your reference, take some Vitamin E and keep an eye on it. If it progresses, go see the doctor. You also can feel for some plaque build up on the side that is concaved. The only problem with have a bent penis is that, I have enter at an angle, which makes for pretty good time for the wife.
Actually, nothing could be wrong. I have seen that before. It isn't weird in circumcised men. I would get it checked out because it is just now curving. Hope you figure out what it is.
I would go to my docter, it sounds wierd. Good luck