Popping veins

Hey ladies, so I've been through a weird phase of negative and positive urine tests. I just got through a new insurance so my OB visit isn't for another two weeks. So I'm not sure if I am (I would be two weeks) or something else going on. 
Any who for a few weeks now I've noticed my veins are extremely green looking in my arms, hands, and breasts. At first I thought it was from the heat (I live in South FL) but I work in an office for 8 hours with rare sunlight and they're still showing a lot. Im black btw, my skin is golden brown (Tyra Banks complexion I would say) I've never had them this visible. Just wondering if this a symptom maybe? Or is this normal? Any insight would be great. 
Happy Tuesday!