Relationship issues coming out during sleep

So I've been with this guy for about 2.5 years. During this entire time I have been told how terrible I am to sleep next to. I talk in my sleep, start fights, kick, and have even thrown hard objects at him. I have zero recollection of any of this upon waking the next day. I have never before been told of any issues like this from previous relationships. I was even married previous to this and never once did my ex husband mention anything like this. For awhile I didn't believe him, and just thought that he was a really light sleeper and that any movements I made were being construed differently than what they really were. Lately though, I'm starting to take this more seriously.

It is no secret that I have a lot of issues with this relationship. In most circumstances I probably would have left already, but that's a whole different can of worms. From what he has told me about what I've said/done, it seems that the rage that occurs in my sleep is directly related to how I feel about this relationship. Even during times when he reports that he tries to calm me down and get me to go back to sleep, in my sleep I see this as a direct attack, and lash out more. There have also been times when I go to sleep, and come out of the bedroom a few hours later with what he reports as with the only intention of starting a fight. I'm aware that stress can cause an increase in this type of behavior, but I don't really feel stressed. I'm more resigned that this is how things are at the moment. This also wouldn't account for the fact that it's been like this ever since we got together, which like in any relationship there were happier times when we first got together.

Today I purchased a voice recorder to try to track these things and perhaps present them to my doctor if they seem serious enough. Has anyone else experienced a situation like this where you are acting out your inner feelings towards your partner in your sleep? Particularly to a dangerous level? I'm somewhat worried that I might do something serious in my sleep. Was there anything that seemed to help, besides leaving the relationship? (That's not really an option at this moment) I feel as though I have pretty good sleep habits, I typically go to sleep and wake around the same time, I don't drink caffeine in the evenings, I don't eat a big meal at night, etc. I also don't believe it is medication related as when we first got together I wasn't taking any medication and he still reported this type of behavior.

Any thoughts would be greatly appreciated.