I apologize for what is probably a very basic question, but I haven't been able to find the answer anywhere else. When I'm having sex with my wife, after I have an orgasm, my penis becomes extremely over-sensitive, especially the head. I imagine this is very common. However, just because I have an orgasm doesn't mean that we're done...you know, I want to make sure she has a good time too. However, when it's so over-sensitive like that, continuing the act is...well, it's certainly not "painful", but it's...almost too much to handle. It seems to me, that this level of sensitivity is the body's way of saying "Whoa there, you'd better stop, otherwise something bad is going to happen." So I guess my question is...is there a chance of doing any kind of damage by having....too much stimulation?