Near my clitoris is a vain that gets very large every time i get aroused it hurts & causes me to remain uncomfortable for quite sometime after ?

Vascular engorgement: Vascular engorgement is part of the normal sexual arousal. If you have a varicose vein in the area from weight lifting, pregnancy, or such, it too will become engorged and may take longer to return to normal after the sexual excitement ends. If this is a problem, a vein specialist who works on varicose veins could be of help.