Aww bitty! Sounds like you experienced sleep paralysis. Sleep paralysis is completely normal, and if you wake suddenly then you may find yourself in it. It is where our body basically freezes during REM sleep, so that we do not act out our dreams (when sleep paralysis doesn’t occur, we have sleep walking). This state usually ends before we normally wake. It can be accompanied by HI, or HS (random sounds or images that can be scary). If you look through the Sleep Paralysis and the Old Hag topic, you might find similar experiences to your own. The key thing is to just not stress and relax, it is normal and everything you see and hear is not real.