What should be familiar becomes unfamiliar?

Hi, I'm an 18 year old from Wisconsin, and something has been on my mind. A few weeks ago, I was driving home and turned onto a street close to my house that I drive on every day, and I didn't recognize it. In fact, I had no idea where I was. I was really frightening and I am really thankful that it only a moment until I realized where I was. Also, sometimes when I think about my loved ones, look at them, or even myself, it all seems like it's someone else's life. They're completely unfamiliar. Again, this only happens every once in a while and doesn't last long, but it still scares me. Do other people have these feelings or is something wrong?