Waking up Paralyzed.?

Every few days or so I wake up paralyzed. (I know it is from waking up from REM sleep and such.) It has been happening for months now. I have read other questions where people said they saw or felt a ghostly presence but i would like to point out i have NOT experienced that. I just wake up and think "oh my god, i can't move." I cant even open my eyes or speak during this. Sometimes i'm half dreaming in it too. But my main question is what is this? is it a branch of Sleep Paralysis? And should i see a doctor about this? Also is there any way to stop this? I know getting enough sleep is key, and i do get enough on most occasions but it still happens. Thank you for taking the time to read! Please answer of you have any answers!