I personally am having trouble seeing how your crossdressing is relevant to any medical issues. Stress can be considered a medical issue but I'm not seeing the connection between stress and crossdressing even. Perhaps you're just wanting to tell someone or talk to someone about it and at this point you don't care who. Your Dr. will likely refer you to a therapist. A therapist will help you learn how to deal with stress and depression and get rid of it. A doctor will just give you pills, which in my opinion, is not a solution. Taking pills for depression is like spray painting over your check engine light in your car. It doesn't solve your problem, it just hides it. Stress and depression are caused by situational factors 90% of the time. If you fix your problems, you fix the depression and that's what a therapist is there to help you do.