Erection curves downward

For as long as I can remember, my erection has curved downwards instead of upwards or just staying straight. When I first was able to get erections at around 10, it used to be a pretty sharp angle, but it has smoothed out quite a bit over the years (I'm 20 now). when I lie on my back with an erection, my penis points upwards instead of lying against my stomach. Is this any reason for concern? I think it could be peyronie's disease, but I don't feel any lumps at all and feel no pain during erection. Sex is possible and pleasurable, though it can get a bit uncomfortable in some positions, like when I'm sitting on a couch and she's sitting on top of me.