Not a doctor or genetic counselor, but it depends if the gene is a dominant or recessive gene. If the gene is dominant you would not be a carrier as you do not have the faulty gene since you would be symptomatic. If the gene is recessive, you may be a carrier.
Have your father and brother had genetic testing? They may qualify for free genetic testing through the
$1, which includes genetic counseling and they can ask these questions on your behalf.