Raynauds is a very serious problem, very serious. What happens is that the blood flow to the distal end of the extremities(hands, feet) gets constricted and can lead, but not always, to amputation. Young men who smoke tend to get this more frequently than others, although I know of a kid (young at that) who had Raynauds, lost both hands and both feet to it.
Now, my suggestion is to get your happy butt to a doctor just as soon as you can make an appointment. I would definately tell the doc your hands are always cold and that your penis is suffering from the chills as well. It could be, but not necessarily, that you have decreased blood flow throughout your body which is bad.
Now that I have caused extreme panic, please, call your doctor, cold hands, and I mean icy cold hands are a sign of something wrong.