Oh! why you are so nervous now itself. The doctor has said your heart is weak and you need an angiogram. Itis O.K.robably he is douting you are having some heart ailment. It will be cleared or confirme in the angiogram. It is only atest and you need not worry. Depending upon the findings you cardiologist may like to have some proceedure and now-a-days it is very common and also very simple.
For your information I like to mention that I had angiogram twice ie. in 1991 and 2002 and both times the doctors found blockages in the arteries and I had by-pass surgeries. Very few people have such surgeries twice in their life time. i am alright now and doing everything. i am 64. So do not worry and you will be cured and alright.
What is angiogram -
or arteriography is a medical imaging technique in which an X-ray picture is taken to visualize the inner opening of blood filled structures, including arteries, veins and the heart chambers. Its name comes from the Greek words angeion, "vessel", and graphien, "to write or record". The X-ray film or image of the blood vessels is called an angiograph, or more commonly, an angiogram.
BEST OF LUCK AND WISHES FOR A SPEEDY RECOVERY-