If I smoked weed during the pregnancy, does this mean there is a higher chance of my child having an asd?

Not Necessarily. Marijuana intake during pregnancy has been associated with some behavioral and other issues, but not specifically with an ASD as far as i understand.
Smoking. Smoking in pregnancy is associated with small for gestational age baby. There is no particular evidence that ASD is higher with smoking weeds (it doesn't mean it is safe!).
What is ASD. Do you mean the heart defect atrial septal defect or autistic spectrum disorder?