<human>: Recently at home a number of small yet odd occurrences have taken place. I am get extremely paranoid by the way

1. When I came home from school (I am 16) I found that the fan in the toilet is left on.  I wasn't too worried as my mum told me she must have left it on.  However it kept happening until the fan finally burnt out.  We got it replaced and got an electrician to make sure there was no faults.  However it happened again today only a week after we had it replaced.  We have been making sure this time everything was off before anyone left the house.  This never used to happen.  

2. The computer in my room is usually off at the wall during the night however I have found that the switch at the wall is on when I wake up. This happens every couple of days. My parents told me that they don't turn it on or come into my room at night.

4. When I go to bed I make sure to charge my laptop, and leave the charger on all night.  Every morning I have awoken to it being off while the laptop is fully charged. Something keeps turning it off during the night. My parents don't come into my room or turn it off.

Is there a possibility that someone is entering the house or am I just being paranoid.

Give me a shortened version of the text
<bot>: toilet fan is turned on during the day, laptop is turned off during the night, and computer gets turned on during the night.