Yes, I agree it could be a med you might be taking, since I had a bad reaction with one years ago. I not only had terrible dreams, but even when I was awake I wasn't right - I thought I was having a nervous breakdown it got so bad. Once I realized what was causing the issues, I dumped those pills and flushed them! Once they were out of my system, I was fine.

See if perhaps you can get the thoughts out of your head of the house being a scary place now that you are alone. I'm sure with that on your mind, that it will carry over into your dreams. You could also try having a small glass of wine before bed, as this works for many people and will help you to relax.