Welcome to PC. It looks like nobody's seen this, or else nobody has commented on it.
I have the same issues with poor sleep and violent dreams. In fact, a lot of the dreams that I consider normal for me, when I discuss them with my partner, she is always flabbergasted at how violent and dark they are. I went through a period of night terrors. That sucked bigtime. If I had to guess, I would say that a change in the symbolism of the dreams (ie. having them more centered around you) could be a sign of your waking life taking its toll on you. It sounds like you're under a lot of stress and poor sleep doesn't help.
In terms of sleeping medication, I have never actually taken any. I have taken melatonin and I know it works for many people but it has not worked for me. I would talk to an herbalist or naturopath if you're looking for something more natural. That might be your best bet for something that's not addictive.
I hope this all sorts itself out for you soon...