Am I Paranoid?

Let me start by telling you a bit about the following. I have no idea of the history of my house although it isn't over 100 years old. My family does not believe in ghosts and give me explanations for almost everything. I do accept most things would have an explanation, but it's just the mass amount of things that happen and I would love to hear opinions, so please feel free to comment me anything.

It's in the last couple of years that things have started happening. The first I can remember is two years ago, my friend and I were sitting on my bed home alone. There was a freezing cold patch of air, so we creeped out, turned my music off and sat downstairs. My music began playing loud enough for us to hear downstairs, and how: we have no idea. When I've been sitting on my own in my living room, the lights have flickered really fast and would only stop after a couple of minutes. This has happened a couple of times but only to me. Sometimes when I was younger I'd remember shutting my window, coming back in and it would be open. Although these memories are vague.

Recently, I've began getting so creeped I can't be alone. One night I woke up around 3am and I could disctinctly hear my kitchen drawers opening/shutting. I shrugged it off as being my mum. But it carried on for at least 5 minutes, by then I was going to go check my mums room; then the smoke alarm went off and in blind panic I ran to my mums room. We checked downstairs, the alarm stopped and nothing was out of place.

Me and my bestfriend are usually the ones to hear footsteps above us and one time there was LOUD scratching on the wall. A door to my towel cupboard upstairs was moving fairly fast backwards and forwards within small range. Although there were no windows open upstairs. Just little things like this.

My radio often turns on by itself with a number of us seeing it. My mum says the button must be stuck, but its not a button that presses down far at all. It takes a tiny click.

One night me and two other friends were sitting in my conservatory talking about demons. Just as I was asked if I believed in them, the loudest noise you could imagine slammed down on the room above me and travelled across the roof. Outside, I couldn't see any animals although it was dark.

Another night, there were four of us home alone downstairs. We heard a small banging noise upstairs so two of them went upstairs to see. The second floor was fine and the noise had stopped, when they reached the top floor they said they'd heard a loudish bang and ran downstairs. Everyone says my house freaks them out when they're in it. I accept that the next thing I'm about to say could've easily been me in my sleep, but I've woken up with two parallel scratches on my neck but very close together. They were quite wide and stayed there for at least a week.

I know this is random things that can have an explanation, but I just need some opinions, is it just me being paranoid?

A few months ago I experienced my first death of a loved one. I'm still very raw about it now and cry often just at the thought of death being so final and inevitable. I'd like to see a medium, to ask about these happenings and my deceased friend. Could you recommend any? I live in Kent, UK. Thanks so much.