I've never really spent much time thinking there might be a hell. Otherwise, I have always thought about what could happen after I die. We are not even so sure ourselves of what could happen after and it might never be possible to know. I would need to have convincing evidence to believe in anything I cannot see, and therefore even if I doubt myself, it's really easy to realize without actual observable proof that there may not possibly be anything like a hell at all.
But yes, it is normal to doubt yourself. It would be unwise to not ask questions as well.
But yes, it is normal to doubt yourself. It would be unwise to not ask questions as well.