hi I have never had intercourse and I am on my period. (Im 15) I have darker blue veins on my upper chest and ive noticed they have been very dark on my wrists and legs too. is this normal? I know it’s a pregnancy symptom but like I said I’ve never had intercourse or even taken off clothes with a guy. I just started colorguard (which is pretty intense exercise on muscles, wrists, arms, etc.). could exercise be the cause for the random extra blueness?