Ok in the house it was just me my mom, cat and her boyfriend. My mom was in her room and her boyfriend was taking a shower so I saw the front door open and I saw my cat went outside Before I went to go get her I checked in the house if anybody was in here but nobody was so I went to go get my cat anyways, I went down stairs and got the cat and while I was going upstairs the door just slammed shut so I thought it was my mom but when I went inside slowly she wasn't there she was still in her room, I asked her if she shut the door and she said no and I told her that the door shut by itself so I'm creeper out.... Idk that was weird. What could it be