Sleeping

Since last Tuesday, I've experienced issues sleeping. Initially, it was out of a sort of creeping fear, the type you get after watching a horror movie. Then, it progressed into full-on insomnia. I've only managed to sleep in small increments of time. Say, three to four hours on and off. My doctor diagnosed me with having insomnia and prescribed sleeping pills as of Saturday. I've been using them and found myself in a worse situation.
I've been waking up nearly every day since Saturday with an inability to move. It's like I'm awake, but I'm not. My eyelids are open and I see my bedroom, but I can't move. I can close my eyes, then reopen them, but my room suddenly becomes warped and horrible. It's like somebody turning down the colour knob on an old TV while simultaneously twisting the brightness knob to slowly creep to blackness. Everything seems to dissolve, then I shut my eyes and open them again. Everything's normal again and then is soon proceeds to do the same thing until I'm in total darkness once more.
And every time I look in my window, I see it. The Seed Eater stands there, with its ragface pressing against the glass, hissing like a corrupted scuba mask. I only catch quick glimpses of it before it all fades to nothingness.
I've done some research and concluded that this is either sleep paralysis or I'm experiencing frequent night terrors. It's terrifying. I haven't had night terrors since I was a little kid. Not like this.