Theres a ghost inside my house however i feel safe?

If you feel safe and good, and the ghost doesn't harm you, then the ghost/spirit is good and is there to protect you. Don't worry you're not hallucinating or anything (addressing those previous comments) it's totally normal and it's a good thing for the ghost to protect you. Sometimes if they show themselves to you they are saying that they are watching over you and keeping you safe. :)