There's definitely some degree paranoia involved here, but I still think I should explore the possibility. A few days ago, I asked my oldest sister if she believed in ghosts, more on a whim than anything. Without a hint of humor she replied yes, and then went on to say she used to get creeped out in my room, formerly hers. She said that she heard someone talking to her, as clear as day. However, she refused to tell me what they said, insisting that I didn't want to know. I know that sounds fishy,but she seemed dead serious and she's not the type to lie.
You're probably thinking, if that's the case, why haven't I heard it? I'm always being told that something happened during the night, like "You went bed before everyone else, so we came in and jumped on you. You got really mad, don't you remember?" Nope. I often find evidence that I've been awake in the night, glasses of water, drawings or writings. I never remember.
The night before last, being a little creeped, I shared my twin sister's bed. In the morning she told me that during the night she woke up to me snoring, and she heard a voice repeatingsomething she couldn't discern. Because she said it was repeated, I assumed I was just making some sort of whistling sound between snores.
Last night, after stealing the blanket off her bed, I fell asleep on the recliner. Tired, she just went to sleep in my bed. The next morning she told me she'd heard the voice again. She described it as being feminine or childish. She said it repeated three phrases, all of which began with "you". The first, she said, was distinct:"you take care". She also said that the door, which she had left open, was shut in the morning, with no one to shut it. I've often noticed that as well.
I figure this is more our imagination than anything. How do I make sure, though? Should I try to make contact?
(P.s. our house isn't that old, but the property is. The old house that was here and that we tore down was ancient and dilapidated, and I know,that at least two people, the elderly former owners died there.)

I have some of the same thing happening to me in my mobile home, I sense it a little more strongly due to my being blind my senses are stronger and when I was a young girl I always would sense spirts around me, I've heard people call my name and no one was there, blind people do have the ability to use all our senses very differen and stronger then normal sighted people,but from what they read your expericing a ghost, do not open any portals unless your expercince in it, it may not be safe, best thing to do is pray and trust your judgement.

I was wide awake just about to close my eyes after setting my alarm and I hear snoring noises with a slight whistle just on my right side of my bed it felt as if there was some one sleeping there I turned and checked nothing there then it went all the way down to my bros side then he said something in his sleep twice I couldn't make out what he said but surely creeped me out O yeah and at night at my sisters house I can hear banging in the attic where its closed of and nobody goues up there its also a house that no other house are connected to SOOO FRIKKIN SCARY

Okay so there's a ghost or demon in my house I'm 12 but its really evil like I can't move when it comes near me

If you're concerned about your room/home, like each of you in your replies seem to be, talk to your parents and look to having a priest or pastor come over. Authority and prayer need to be brought into these homes and it takes a spiritually mature person to do so.