I pretty much have nightmares every nite. Last nite I woke up and yelled "shut up" to someone and I heard a voice on the other side of the room talk back to me. Im not sure what they said but it was talking back to me somehow. I then heard something russling around in the heater vent. I jsut went back to sleep. anyone experience anything like this b4?

It sounds like you are under a lot of stress and the part of your brain that makes you feel anxious is working overtime. Sometimes too much stress and/or lack of sleep, bad diet, etc. can make it hard for the anxious part of you to shut down and for you to relax. It's normal to have hallucinations when you are just waking up; they can be made worse by stress and lack of sleep.

It's possible that this can also be a reaction to a trauma.

Are you taking any drugs or medications? Those might affect your sleep/dreams, too.