You might have a spiritual entity of some sort on your hands. It can be quite frightening if you're not familiar with that sort of thing. If this entity is making you feel uncomfortable, then look into Protection and Banishment spells/rituals.
One of the most commonly used Banishment rituals is that of Smudging. This can be done by burning White Sage (or typical Sage) and allowing the smoke to enter EVERY corner of your home and property. Sage's energy vibrations is very good at cleaning away negative energy.
Sometimes the smudging doesn't work, however. This can be due to the fact that the entity's intentions aren't "negative" or it is of a stornger velocity. Try the smudging, if that doesn't work; message me. I can offer you additional advice.
As for Protection, a Pentagram is typically used in the Craft as a symbolo of Protection, much like the Cross is used in Christianity. You can also visaualize a sphere of White/Blue/Gold energy around you and your home, protecting you from any harm.
Any questions, feel free to message me. =)