No. If the itching is not localized to your nips you are fine. Also, some people get itchy nips while on but do not get gyno. It's very individualistic. Once you start noticing tissue growth, start worrying.
I really think that it is just bodyfat. I dont have any pics. A doctor should be able to tell you if there is tissue build up correct? I just started cutting so I will have to see how much of it goes away. Im hoping that the money I spent on arimidex will help reduce a little of the puffyness.