I am having trouble getting an erection and maintaining it.  I am only 20 years old.  What should I do?

 

I would advise you to seek the advise of a doctor.  It happens to a lot of men and it can be due to stress, side effect of a drug or anything in particular that happened to you in the past.  Don't be shy to talk to your doctor about it.  Doctors are there to help you. Good luck! Here is an article that may help you learn more about it: http://www.webmd.com/hw/impotence/hw231151.asp