My dad renovated our home built in 1958-drywall and all.i'm worried i was exposed to asbestos when he took the drywall down back in 1990. now what?

Asbestos exposure: Do you have any symptoms such as chronic cough? Shortness of breath? Coughing up blood? Weight loss? Trouble swallowing? If so, you may be screened with an x-ray or CT scan. In suspected disease, a biopsy of the lung during bronchoscopy may be used to detect fibers. Here is information for your family from cancer.gov: http://tinyurl.com/jumkqpf