I Can't Sleep Alone Anymore, Am I Loosing My Head?

I don't know where to start.

My name is Artyum, I'm 17 years old and live with my mom, dad and dog, I have no brothers.

3 months ago when my mom was sleeping, something woke her up, and she like a cat jumped to her legs and just sat there.

It happened about 3 times. Then, a weak ago, I was sleeping while my parents were still awake. When I just starting to fall asleep, something wake me up and breathed to me.

I acted like nothing happened and continued to sleep.

A one night I woke up after a nightmare, and I saw someone standing in front of me in the corner of the room, he was black and I didn't see his face, then after a couple of seconds I blinked and it just dissipated.

I have a girlfriend. She's a "mag". She told me that when she met me, she started to get weaker when I huged her and was near her. She told me that I'm a mag, an "Energy Vampire", that when I am near people, I suck there energy while doing nothing, and my other friends that I met a day later felt that without asking me.

Two days ago I was asleep, and in the middle of the night, someone or something wake me up.

I tried to go back to sleep, but I woke up 5 minutes later all sweating and wet, I don't know why, and I felt so tired like I run of a marathon.

In the morning, my parents went to work and I was alone at home preparing to go to school. Every time I walked near the Bathroom, I felt that someone is there, That someone is watching me... I got out of the houe as fast as I could.

I tried to go to sleep but I couldn't, so I went to my parent's bed to get some sleep, ad I fall to sleep fast.

A day later, it was the same thing, I slept with my parents again.

Yesterday, I went to my girlfriend's house. We were lying on her bed, kissing, and after a while we fall asleep. I woke up after 15 minutes' and she told me that she's going to coock something to eat, and she told me to continue sleep until the food will be ready.

And something weird happened. When she left, I couldn't sleep.

After we ate, I did an experiment. We were lying on her bed again, and I tried to fall asleep, I slept over an hour.

She spoke with her friends, there are mags too, they told me it could be a "Korchak Dimon", it takes your energy while you asleep alone, but when you sleep with someone who you love, like family or a girlfriend, he stays away.

Is that true? Am I loosing my mind? I don't know what to do.