If your parents are still living, ask them if you got the smallpox vaccine. I called the dept. of health for the county I grew up in and they did not have any records on me but a nurse there told me to check if I have a circular dot type scar on my arm which is what the smallpox vaccine leaves on you at the injection site.
It's about 1/2 inch across.
https://www.healthline.com/health/sm...bcg-with-photo