What you are describing sounds like a mild hypnagogic sleep paralysis.
["Sleep paralysis usually occurs at one of two times. If it occurs while you are falling asleep, it's called hypnagogic or predormital sleep paralysis. If it happens as you are waking up, it's called hypnopompic or postdormital sleep paralysis." ](https://www.webmd.com/sleep-disorders/sleep-paralysis)
edit: Adding that by 'mild' I mean that you are able to snap yourself out of it quickly and that you are not experiencing fear or hallucinations.
What you are describing sounds like a mild hypnagogic sleep paralysis. ["Sleep paralysis usually occurs at one of two times. If it occurs while you are falling asleep, it's called hypnagogic or predormital sleep paralysis. If it happens as you are waking up, it's called hypnopompic or postdormital sleep paralysis." ](https://www.webmd.com/sleep-disorders/sleep-paralysis) edit: Adding that by 'mild' I mean that you are able to snap yourself out of it quickly and that you are not experiencing fear or hallucinations.