Am i crazy? ( paranormal things happening)?

Ok so My name is Emily im 14 years old and i live in a very old house but it looks very new..

ive lived in the house since i was 2 and ever since i turned 14, ( one mouth ago ) weirdd things happen and i am very scared here are some things.....

Ok i was sitting in my living room watching tv and i was home alone because my parents were at work.. i heard a bang in the other living room downstairs, i figured it was my dog daisy so i went down and noone was there , i went in my moms room andmy dog was laying on her bed sound asleep . that was only my first experience and every day it gets worse

my friend was over and we were on the computer al of a sudden it shut off and i told my friend it went dead cause i didnt want her to leave then my door slammed shut with no one ele in my house i told my friend laura that it was my window she look at my window and it wasnt open so i said my moms window...

One night i was sleeping and i heard a bang woke up and my bathroom light was one and my door was shut ( i usally leave my door open with my light off) i thought my mom was using my bathroom because it was closer so i stand by the door and i heard the toilet flush so i thought .. yeah thats my mom. i needed to use the bathroom and didn't want to walk all the way to the others bathrooms so i waited.. and waited,,,i yelled my moms name and said " mom hurry up its my bathroom!" the light turned off. there was no answer so i opeend the door to peek to see if she was in there and no one was in there i even looked in the shower and everywhere!.

i had a sleepover with 2 of my friends emma and abbey. i woke up in the middle of the night and i heard a big huge bang as i was trying to get back to sleep. i looked and they were both just waking up so it wouldent be them! i looked over by my bathroom and i saw a shadow figure it was black in front of the shut door. i yelled mom? dad? it didnt respond so i got up and said emma .abbey stop! i looked down to remember they weve stairing at me from below. i said look do you guys see that !!and i pointed to the door ( it was still there) and they looked and said ": what are you talking about" i just said never mind even it was still there.

one night i woke up and my back was burning like it was on fire! i turned on my light and looked in the mirrir to see 3 large bloody stratches on my back , my cats and dogs werw not in my room.

i have tolsd my mom about this and she will not beleive me!

it mostly happens in the night , so i asked my mom to buy me a night vision camera she was wondering why sdo i told her i was sleeping over to my friendds and we needed one.

she bought me one and i set it up in the night , went to sledep and the next morning my camera was smashed on the floor.i looked in the camera to get the memory card and it was gone. no where to be found.

i have a whole pin board full of pictures on my bedroom wall, one day when i arrived home from school i was looking at them and every single picture on e had my eyes scratched out ! and a stcrath going across my neck. i was terrified i told my parents and they didnt beleive me so i said go look for yourself so they did. and all of the scratches were gone, i cant explain this at all. they think im retarded because it only happens to me and only me i hear bangs and i feel things on my leg and my bed shakes and i hear voices i have dreams about people i care about ( my friends) getting hurt by a old man with no face . my parents think im crazy and im not i see what i see! please help ! i know im not crazy.