My husband and I have been together 9 years and he has always had a straight penis. Not curved at all. One time after intercourse we both noticed his penis was curved all of a sudden. This was a couple weeks ago and since then it has remained curved and is a little painful when he is erect. What could it be?? We know he probably has to be seen by a doctor but could this be something serious? Not sure if this matters but he is 33 years old.