Howdy, Jessicaelle
I've experienced similar things, though I'm not sure if sharing them will help you feel at ease or uncomfortable.
Bed shaking, I've experienced exactly twice in my life. Both times, I was wide awake and conscious and whatnot.
The first time, I was in my parents' bedroom on the bed watching TV while they were off to visit the neighbors. The bed began shaking. It felt like a cat was on it, scratching at its ear with its hind leg... that sort of shake. It would stop and start. I still have no explanation. As a disclaimer, other weird stuff happened in that house. Not poltergeist level, but pretty terrifying for a child.
The second time, it was the result of feeling the Mexico City earthquake last year (I live in Texas). It wasn't a violent shaking, by any means, but noticeable and perfectly natural.
As for the, "HEY!" That could very well be nothing more than neurons misfiring as you're drifting off to sleep and the brain is transitioning. There is science regarding things like that, the explanation similar to why we jolt awake or jerk our limbs as we're falling asleep; which tends to happen to me in the form of my brain slipping into a quick dream where I trip over something, then next thing I know my body reacts as if I'm actually falling and jerks me awake.
However...
At my dad's house, I experienced something very similar at the start of what would become a fairly awful experience spread out over a few years. I'd awakened pretty early one weekend. Being a teenager, I wasn't having that and really wanted to just go back to sleep, but couldn't. Instead, I just lay in bed being lazy, going over how I'd like to spend my day. When, out of nowhere, there is this loud, booming,
"BOO!"
Being a teenager and it being the 90s, I had a toy called an Echo Mic, which I kept atop my headboard. It sounded like someone yelled "BOO!" as loudly as possible into that thing.
Naturally, this scared all that was cute and fluffy right out of me and I jolted upright and was legit done with being in my room that day.
Since then, now that I'm older, I've had other experiences that haven't left me feeling threatened. I don't know if it's because I'm older and so over being poked at, or if it's because the things trying to get my attention aren't of the jerk variety.
So I'm curious how these experiences leave you feeling, because I want to say angels or spirit guides wouldn't be as intrusive as interrupting your sleep through yelling and shaking things. However, I am not an expert here, I just know what I've experienced in my life.