Oh man. Lookit, everyone starts out at the bottom. We are not born knowing these things they are learned, generally during the heat of the moment. You are not stupid for not knowing first. Not everyone gets here after years of metaphysical work, sometimes this is where they wind up first.
Now before I trot my story out I'm going to tell you that if you are being bothered by an unbound the best attitude to have is so what. Any negative emotion will feed it; panic, anger, fear etc.. Will keep it hanging around. And giving it any mental attention will keep it coming back.
Also, everyone has unbounds around them. Even if they don't pay one iota of attention to the paranormal. Some just cause more issues then others, but those are generally already attached to a place, person, object or are called in in some manner. Have you done any rituals or played with a Ouija board or gone to any places that have a heavy amount of nasty spirits lately? If not then its probably a feeder.
I have always felt energy. I knew about spirits because when I was younger I pulled in a pretty awful one who caused a bad accident so I knew what having them around would be like. But, when I first brought home bound spirits my whole being panicked. My senses went into over drive, and my anxiety went to 11. I lost it and about left everything behind, because I felt like I was drowning from how much I could feel. I was scared about unbounds, I was scared about what could happen, I didn't feel like anything was in my control. I felt stupid because, here I was struggling with feeling to much, while so many were upset that could feel nothing so I didn't ask for help.
But I'm stubborn. I wanted this to work, so I researched. I admit I bought a lot of protective bindings and other things to help me feel safe. And slowly after weeks of grit teeth and tons of energy work and preserverance the anxiety tapered off, the insane amount of energy overload calmed down, and everything levelled out. I say weeks I mean around three months, it was rough but I got there.
This life involves a lot of work. I agree it should be said upfront for those who stumble here first. I will say this though that even outside spirit companionship, any metaphysical work takes dedication, training, and work. Any path you take in the metaphysical will, its just its nature. But it's doable. Work on your confidence, know you have control to fix what needs to be fixed. And if you'd rather stop, push it all out of your mind and focus on something else, giving no more attention to this path. If you need advice on where to start to build a base I can offer you some tips. But it's up to you.