“Hepatitis B is spread when blood, semen, or other body fluids from a person infected with the virus enters the body of someone who is not infected. This can happen through sexual contact; sharing needles, syringes, or other drug-injection equipment; or during pregnancy or delivery.” - CDC
I think I’m safe.
When I was 21, I was exposed to hepatitis B through none of the activities listed. I was working in a pathology lab that handled a lot of blood samples and got cut by a broken sample tube. Naturally that sample had a hepatitis warning label on it, so I had to get two gamma globulin shots a week apart. It must have worked, because I never came down with hep B. Even donated blood plenty of times over the years since then. No plans to get tested again.
So it’s not always sex and drugs that can give you hepatitis B.