Big head, small head?

Some days the head/glans of my cock is big, full and a nice purple color.
But some days its small, not very full and a pale color.
Whats wrong with it or is this normal?

mine is Purple when hard and not purple soft...

actually there are some days when my head is damn big even when it's not hard. Can't explain it but it's true.

Air temperature as well as state of health (mental and physical) along wtih state of arousal--
In cold conditions Mr.Winkle often shrinkles.
When you are ill,often times Mr.Peeper, shuts down like a sleeper.
As to arrousal, you may see someone or think for a second of something and your penis starts to come to life. Changes happen, and so far your situatiobn seems normal.

I don't think there is anything wrong with it
the same thing happens to mine
Matt

that has happened to me too

Mine is not purple but will change from a pink when soft to more of a red color when hard. When soft my head seems to stay the same size though, I do not notice any notable difference. Cold weather will change the color of my head, makes it red in color. It might be normal for the head to change color from day to day, mine does.