Sleep paralysis, or pressing ghost?

Informant: Male/22/Hawaiian-Filipino ancestry
Location: Kahala, Oahu

This actually happened to me a week ago and I'm still trying to make sense of it.

Ever since I was a kid I'd get what most people refer to as "sleep paralysis," along with hearing loud ringing sound that always wakes me up but leaves me helpless for minutes. What usually happens is, I'll be in deep sleep and in the middle of a dream when all of a sudden the ringing sound screeches in my head and I'm awake but unable to move any part of my body. I usually say prayers until it goes away and try to convince myself that it was just a dream.

Anyway, a little over a week ago I slept over at my girlfriend's house in Kahala. While sleeping, I had another "sleep paralysis" episode, but this time I felt the presence of someone next to me, as if someone walked into the room and stopped beside me. Despite the fact that I was unable to move my body, I was just able to open my left eye ever so slightly. I was glad I had some control of my body but I was hoping I wouldn't see anything.

What I saw still haunts me.

I saw a skinny black figure that looked almost like TV static in the sense that it didn't look solid. It was there just for a moment then it backed away and was gone. The craziest thing is that I swear I heard it hit my girlfriend's plastic shelf as it left my range of vision. As soon as it left I was able to get up and was in shock. I didn't even wake up my girlfriend to tell her. I spent over half an hour trying to convince myself that it was just a dream, but I know it happened and I know it's not my imagination.

I'm seriously considering therapy or at least getting my girlfriend's house blessed.