Is it normal to have a redder head and glands after a day off from stretching? Seems like my unit looks more plumper while its hanging and also the head seems like its bright shiny red. Is this a good pi? Also when its about 30 percent erect i wiggle it to see if it feels sore and it does. Today is my second day off from stretching and this usually clears up after this day but could i keep stretching even if it does feel sore inside?