Hey there!!!
Just a note: I am not here to be rude, critical, or judgmental, so please extend the same courtesy to me.
First, I have to agree, getting help from a qualified individual as to whether or not you may have something that is causing hallucinations
would be a good idea. Why do I say this? Because I have experienced these types of things personally and it is best ti rule out all options
first.
Second, please don't lambaste me just because I mention God and Jesus.

demons DO want to hurt you, well, mostly scare, especially if they
think you are close to converting to Christ or might be used greatly by God.
Third, I have to agree, the best thing you can do for yourself is start reading the Bible and praying more, especially before sleep and whenever
you feel any pains. Its not as simplistic as the other guy suggested however. Demons fear the spoken word of the Bible, and although they know it
well they hate truth.
I have been involved in occult activities myself for years when I was a teenager. I summoned demons as well as holding seances with my best
friend and other things of that nature. I was a Christian, but I was very very curious about magik and ghost and other things like that.
However, long before I got involved any of that, I recieved many visits from demons while awake and especially in dreams. In fact, I still do.
Though I attribute my more recent attacks to me being closer to God and having a desire to serve Him and only Him AND having a wonderful relationsip
with my husband, which makes Satan and demons very angry indeed.
Part of the reason I stumbled across this post was because I was looking to see if others had similar problems, Christian or not.
Fortunately, in my case, I have noticed that the demons cannot touch me, and I am certain this is because I am protected by my relationship with
Jesus Christ. They've never been able to do anything physically to me accept for the one time I asked Satan to possess me and even that should've
been worse than it was.
A lot of times we don't even notice when demons are there, they usually prefer not to be noticed. So if this is NOT an issue of the mind,
there has to be something about you that makes them want to let you know they are there and not care that you know there is a spiritual side to the
world. Usually they'de rather keep people ignorant, you can't make a change if you don't know there's a problem.
Anyway, I just want to help, having been there myself, and still having issues with demons, I can empathise a lot. Especially since you are so
young!!!
God Bless ~Amy