Paranormal Perhaps- Is My House Haunted? Or Am I?

I'll start off by saying that although the idea of the paranormal scares me, I am a sceptic. I enjoy the thought that ghosts may exist but have never seen one myself, with my own eyes.

A few nights ago, myself and my partner went to bed. He went to sleep nearly straight away but I stayed awake. I couldn't shake the feeling that we had left our back door unlocked and that started me imagining that we would be robbed. I have a very vivid imagination and once I imagine something, I find it hard to forget the idea.

So now I'm laying awake thinking we are going to have someone trying to get in, and then I hear a noise. A car pulling up out the front of our house. I live in terraces at the top of a dead end hill so this is a little unusual, its about 2:00am. I stay awake listening a bit longer and that's when I heard the sound that really scared me. It was exactly the sound of something heavy falling from a height then bouncing/rolling in my dining room. I imagined it must have been one of the geodes on my dining room mantlepiece falling off, but they would definitely not bounce as they are incredibly heavy.

After listening for ages, I decide it must be nothing and I will find out in the morning what caused the noise (I'm a big scaredy cat so there is no way I would go down and investigate). Then I hear another noise, and I know EXACTLY what it is. I have a little silver-plated pot on that same mantlepiece filled with my childhood milk teeth (a weird tradition of my father's) and I hear the exact sound of this pot being rattled. That's when I know that something must be going on. After listening for what must have been another hour and not hearing anything else, I get too tired and go to sleep.

I reluctantly told my partner the next day about my experience, I knew he would laugh at me for being scared. It turns out the doors had been locked and evidently nobody had gotten in so the noises were a bit unexplainable. Also I could not find the source of the bouncing bang.

This has happened a few times, although not every time has been in bed. We often get loud bangs in the dining room while we are in our living room watching television or working. Our light bulbs keep blowing in the kitchen and bathroom (though I think that may just be our electrics).

The only unexplainable thing I have seen is my bedsheet drastically change positions after I left my bedroom for a few minutes.

I should add, this has happened to me before in a different way. One of my vivid childhood memories was waking up very early morning, maybe 2/3 am. I thought to myself that there is no reason to have woken up then I started thinking, what if there was someone else in the house? I lived with just my dad in a different house. I could hear him snoring from downstairs, then suddenly I heard a voice say "Shhh" and then "She will hear us." I was really freaked out but eventually went back to sleep and thought nothing else of it.

I suppose my experiences have had me asking whether my brain is playing tricks on me and I am hearing things because of what I thought? It's like I'm thinking about things and then hearing them happen. Or am I picking up on something else being there?

To be honest, the idea is putting me on edge and I don't like being in the house alone and I listen to music to help me sleep.