Recently there's new noticeable red veins appearing on my foreskin.When flaccid, part of the veins are still faintly noticeable and is purple looking when I stretch the foreskin. When erect, some part of the veins(the part that is noticeable when flaccid) are more bright red than the rest of the same vein. There is no pain or any discomfort, is this normal or should I be concerned?