Thanks for your input, Lauren!
Trici - I'm not a scientist, but my opinion on sleep paralysis is that if it rarely occurs, it's probably a hagging. If it occurs frequently, it's probably a sleep disorder. Your dream could also have been a simple nightmare.
Not everyone sees a white figure or has pressure in the same place during a hagging. Can you relate the dream and experience to what's going on in waking life? Try looking up the key symbols:
Legs Feet Intruder Let me know what you think.