so this is a very embarrassing thing for me im a 16 year old girl ive never had sex, I have a weird vein like thing on my right side of my clit, it feeling swollen or puffy, but its gets more puffy when im sexually aroused, its been this way for about 3 days now and im honestly worried because it has never happened to me before.... please help me understand ( also to mention idk if this helps or not but ive been late for my period a few times now so idk ) I do have a boy friend