The Consciousness Has Shifted...The Awakening Has Begun
I went through the same thing in 2006; it can take a while to pass. For me it resulted from growing pains associated with psychic-energetic-spiritual evolution. The entire matter could be considered both psychological and spiritual in nature.
In any event, I would avoid taking drugs, or "prescriptions," of any sort.
This sounds a lot like a nocturnal panic attack. They happen during the sleep cycle, and there are many that experience these things but it's not to be confused with sleep paralysis and the anxiety that stems from it. Belly breathing helps until you are able to rest easy and go back to sleep.