Is it normal for a 26 year old female to have very visible veins on chest, legs, arms, and breast?

Hello Doctors, Some days my veins look very dark almost as if someone had drawn them on. Is this considered normal aging? I have no history of medical condions and do not smoke. As of the last 2 months I've been inactive and extremely stressed. Could this be the problem? I would hate to go to the GP for something minor. Thank you for your time!