Sleep problem, hallucinations and paralysis

It started around 3 months ago. I sleep the entire days and nights but wake up after 1h to 4 hours max, do one thing and go back to sleep, sometimes I feel rested but then exhausted again after 1 hour. Every time i go to bed I get hypnagogic hallucinations and each dream is a nightmare, 90% of it being a sleep paralysis one. I'm on lamotrigine and aripoprazolum I need help.