First of all...Hello & Welcome!
I'll try to give this a shot from two different perspectives.
As a sensitive; try doing some relaxation exercises while lying in bed and attempting to fall asleep. Use the method of Tai Chi, relax, breathe, feel the earth, do nothing extra. Encircle yourself in a warm white light starting from the top of your head all the way down to your toes. Remind yourself that you are OK & safe and nothing can harm you. As you relax deeper increase the power of the light around you until it begins to actually warms you. Again, remind yourself that you are a powerful human being and nothing can take control of you and you call the shots.
Now, as a paranormal investigator; run a couple of digital recorders and a video camera facing you lying in your bed. Hopefully you have or can get access to this equipment. Also, an EMF detector would help.
Your fears are understandable and valid, but you must do what you can to take control.
One more point, if you continue to have this problem accompanied by night sweats, night terrors, nausea, frequent panic attacks please see your doctor because this could be a sign of a serious condition.
Keep us up to date on how you are doing and what progress you have made.