Frightening Dreams About My Therapist

I am typically a side sleeper and I wake in the middle of the night or in the morning with a very stiff neck / upper back (usually after sleeping on my right side though occasionally on either). It s not the same stiffness you d get when sleeping on an inadequately firm / soft pillow but stiffness as though my body is tensing during sleep from either bad dreams I don t remember or an automatic tensing I m not able to control. I tend to need sleep aids to go to sleep and use Melatonin,... Body Tension During Sleep / Any Suggestions?
https://www.myptsd.com/c/threads/frightening-dreams-about-my-therapist.64086/