Painful sex

Every time I have sex it’s pretty painful. It almost feels like small tears or like sandpaper. Some positions hurt less than others. I’ve been told I’m very tight, and I don’t know it’s if that, maybe I’m too dry, or there’s an underlying issue. I’m always very sore the next few days as well. I have no way to see a doctor about it, I have no car and no way to get there.