Given the fact that the stress test
was abnormal, I believe that you require follow up by a cardiologist, I would try another colleague since you did not develop good rapport with your previous one. Young women can have heart disease
as well. As per the intermittent symptoms of coldness and bluish discolaration of the hand, there is a phenomenon called Raynaud's in which the hands and feet can experience those symptoms with stress or cold.
Hope this is useful.
Dr Brenes-Salazar MD
Mayo Clinic MN