Thats what sends my day sometimes into a downward spiral waking up after a bad dream. . I begin to think about what happened in the dream and it kinda curbs my day into the dumpster.
Have had some morbid dreams myself. Try turning on a fan or kick the AC on low before you goto bed.
I've had significantly less bad dreams with a cooler, quieter sleeping environment.
I'm sure your fine. . and will probably outlive all of us.